{"id":4333,"date":"2020-03-18T22:39:49","date_gmt":"2020-03-18T13:39:49","guid":{"rendered":"https:\/\/sasamath.com\/blog\/?p=4333"},"modified":"2020-03-23T18:42:10","modified_gmt":"2020-03-23T09:42:10","slug":"sasa-textbook-math1-01","status":"publish","type":"post","link":"https:\/\/sasamath.com\/blog\/articles\/sasa-textbook-math1-01\/","title":{"rendered":"[\uc218\ud559\u2160] \uc81c1\uc7a5 \uc9d1\ud569\uacfc \ub17c\ub9ac\uc758 \uae30\ucd08(1)"},"content":{"rendered":"<style type=\"text\/css\">\nspan.hfill {\nfloat: right; \n}\n<\/style>\n<h1 style=\"text-align: center; margin-top: 1em; margin-bottom: 0.5em;\"> \uc81c1\uc7a5 \uc9d1\ud569\uacfc \ub17c\ub9ac\uc758 \uae30\ucd08 <\/h1>\n<blockquote><p>\n&#8221;\ucca0\ud559\uc740 \uc6b0\uc8fc\ub77c\ub294 \ub4dc\ub113\uc740 \ucc45\uc5d0 \uc4f0\uc5ec\uc788\ub2e4. \u2026 \uadf8\uac83\uc740 \uc218\ud559\uc758 \uc5b8\uc5b4\ub85c \uc4f0\uc600\uc73c\uba70 \uadf8\uac83\uc758 \ubb38\uc790\ub294 \uc0bc\uac01\ud615, \ub3d9\uadf8\ub77c\ubbf8 \uadf8\ub9ac\uace0 \ub2e4\ub978 \uae30\ud558\ud559\uc801 \uc218\uce58\ub4e4\uc774\ub2e4.&#8221; <br \/>\n-\uac08\ub9b4\ub808\uc624 \uac08\ub9b4\ub808\uc774(Galileo Galilei; 1564&#8211;1642)-\n<\/p><\/blockquote>\n<p>\n19\uc138\uae30 \ub9d0 \uc218\ud559\uc790 \uce78\ud1a0\ub974(Cantor, G.; 1845&#8211;1918)\ub294 \ubb34\ud55c\uc9d1\ud569\uc5d0 \uad00\ud55c \uc774\ub860\uc744 \ucc98\uc74c\uc73c\ub85c \ubc1c\ud45c\ud558\uc600\ub2e4.<br \/>\n\uc218\ud559\uc758 \uae34 \uc5ed\uc0ac\ub97c \uc0dd\uac01\ud574\ubcfc \ub54c &#8216;\uc9d1\ud569&#8217;\uc774\ub77c\ub294 \uac1c\ub150\uc744 \uad6c\uccb4\uc801\uc73c\ub85c \ub2e4\ub8ec \uac83\uc740 \ube44\uad50\uc801 \ucd5c\uadfc\uc758 \uc77c\uc774\ub77c \ud560 \uc218 \uc788\ub2e4.<br \/>\n\uc624\ub298\ub0a0\uc5d0\ub294 \ubaa8\ub4e0 \uc218\ud559\uc801 \ub300\uc0c1\uc744 \uc9d1\ud569\uc744 \uc774\uc6a9\ud558\uc5ec \uc815\uc758\ud55c\ub2e4\uace0 \ud574\ub3c4 \uacfc\uc5b8\uc774 \uc544\ub2c8\ub2e4. \uc989 \uc9d1\ud569\uc740 \uc624\ub298\ub0a0\uc758 \uc218\ud559\uc744 \uae30\uc220\ud558\ub294 \ud604\ub300\uc218\ud559\uc758  \uc5b8\uc5b4\ub77c\uace0 \ud560 \uc218 \uc788\ub2e4. \uc9d1\ud569\uacfc \uba85\uc81c\uc5d0 \ub300\ud55c \uacf5\ubd80\ub294 \uc0dd\uac01\ud558\ub294 \ub300\uc0c1\uc744 \uba85\ud655\ud788 \ub9d0\ud560 \uc218 \uc788\uac8c \ud574\uc8fc\uba70 \ub17c\ub9ac\uc801\uc778 \uc804\uac1c\uc758 \ubc14\ud0d5\uc774 \ub41c\ub2e4. <\/p>\n<h2> 1.1 \uc9d1\ud569\uacfc \uba85\uc81c <\/h2>\n<h3> \uc9d1\ud569\uc758 \ub73b\uacfc \ud45c\ud604 <\/h3>\n<p>\n\uc8fc\uc5b4\uc9c4 \uc870\uac74\uc5d0 \uc758\ud558\uc5ec \uadf8 \ub300\uc0c1\uc744 \ubd84\uba85\ud558\uac8c \uacb0\uc815\ud560 \uc218 \uc788\ub294 \ubaa8\uc784\uc744  <span class=\"defined\"> \uc9d1\ud569<\/span>\uc774\ub77c\uace0 \ud558\uace0, \uc9d1\ud569\uc744 \uc774\ub8e8\uace0 \uc788\ub294 \ub300\uc0c1 \ud558\ub098\ud558\ub098\ub97c \uadf8 \uc9d1\ud569\uc758  <span class=\"defined\"> \uc6d0\uc18c<\/span>\ub77c\uace0 \ud55c\ub2e4. \uc608\ub97c \ub4e4\uc5b4 <\/p>\n<ul>\n<li> \ud6cc\ub96d\ud55c \uc0ac\ub78c\ub4e4\uc758 \ubaa8\uc784<\/li>\n<li> \ud0a4\uac00 \ud070 \uc0ac\ub78c\ub4e4\uc758 \ubaa8\uc784<\/li>\n<li> \uc544\uc8fc \ud070 \uc790\uc5f0\uc218\ub4e4\uc758 \ubaa8\uc784<\/li>\n<\/ul>\n<p>\uacfc \uac19\uc740 \ubaa8\uc784\ub4e4\uc740 \uc9d1\ud569\uc774 \uc544\ub2c8\uace0<\/p>\n<ul>\n<li> \\(10\\)\ubcf4\ub2e4 \uc791\uc740 \uc218\ub4e4\uc758 \ubaa8\uc784 <\/li>\n<li> \ud55c \uc790\ub9ac \uc790\uc5f0\uc218\ub4e4\uc758 \ubaa8\uc784 <\/li>\n<li> 2020\ub144\uc5d0 \uc138\uc885\uacfc\ud559\uc608\uc220\uc601\uc7ac\ud559\uad50\uc5d0 \uc785\ud559\ud55c \ud559\uc0dd\ub4e4\uc758 \ubaa8\uc784 <\/li>\n<li> 2016\ub144\uc5d0 \uc138\uc885\uacfc\ud559\uc608\uc220\uc601\uc7ac\ud559\uad50\ub97c \uc878\uc5c5\ud55c \ud559\uc0dd\ub4e4\uc758 \ubaa8\uc784 <\/li>\n<\/ul>\n<p>\uacfc \uac19\uc740 \ubaa8\uc784\ub4e4\uc740 \uc9d1\ud569\uc774\ub2e4.\n<\/p>\n<p>\n\\(10\\)\ubcf4\ub2e4 \uc791\uc740 \uc18c\uc218\ub4e4\uc758 \ubaa8\uc784\uc744 \\(A\\)\ub77c\uace0 \ud560 \ub54c, \\(2\\)\ub294 \uc9d1\ud569 \\(A\\)\uc758 \uc6d0\uc18c\uc774\ub2e4. \uc774\ub54c, &#8221;\\(2\\)\ub294 \uc9d1\ud569 \\(A\\)\uc5d0 \uc18d\ud55c\ub2e4.&#8221;\ub77c\uace0 \ub9d0\ud558\uace0 \uc774\ub97c \uac04\ub2e8\ud788 \uae30\ud638\ub85c<br \/>\n\\[<br \/>\n2\\in A<br \/>\n\\]<br \/>\n\uc640 \uac19\uc774 \ub098\ud0c0\ub0b8\ub2e4. \ud55c\ud3b8 \\(6\\)\uc740 \\(A\\)\uc758 \uc6d0\uc18c\uac00 \uc544\ub2c8\uace0 \uc774\ub54c\ub294 \\(6\\notin A\\)\uc640 \uac19\uc774 \ub098\ud0c0\ub0b8\ub2e4. \uad00\ub840\uc801\uc73c\ub85c \uc9d1\ud569\uc744 \ub098\ud0c0\ub0bc \ub54c\ub294 \ub300\ubb38\uc790 \\(A, B, C, \\ldots\\) \ub4f1\uc744 \uc4f0\uace0, \uc6d0\uc18c\ub97c \ub098\ud0c0\ub0bc \ub54c\uc5d0\ub294 \uc18c\ubb38\uc790 \\(a, b, c, \\ldots\\) \ub4f1\uc744 \uc4f4\ub2e4.\n<\/p>\n<p>\n\uc9d1\ud569\uc740 \uadf8\uac83\uc744 \uc774\ub8e8\uace0 \uc788\ub294 \uc6d0\uc18c\ub4e4\uc5d0 \uc758\ud574 \uacb0\uc815\ub418\ubbc0\ub85c \uc5b4\ub5a4 \uc9d1\ud569\uc744 \ud45c\ud604\ud558\uace0\uc790 \ud560 \ub54c\ub294 \uadf8 \uc6d0\uc18c\ub4e4\uc774 \ubb34\uc5c7\uc778\uc9c0\ub97c \ud45c\ud604\ud574\uc8fc\uba74 \ub41c\ub2e4. \uac00\uc7a5 \uac04\ub2e8\ud55c \ubc29\ubc95\uc740 \uc6d0\uc18c\ub4e4\uc744 \uc911\uad04\ud638 \\(\\{\\quad\\}\\) \uc548\uc5d0 \ubaa8\ub450 \ub098\uc5f4\ud558\ub294 \uac83\uc73c\ub85c \uc774 \ud45c\uae30 \ubc29\ubc95\uc744 <span class=\"defined\"> \uc6d0\uc18c\ub098\uc5f4\ubc95<\/span>\uc774\ub77c\uace0 \ud55c\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \\(10\\)\ubcf4\ub2e4 \uc791\uc740 \uc18c\uc218\ub4e4\uc758 \ubaa8\uc784\uc740<br \/>\n\\[<br \/>\nA=\\{ 2, 3, 5, 7 \\}<br \/>\n\\]<br \/>\n\uacfc \uac19\uc774 \ub098\ud0c0\ub0bc \uc218 \uc788\ub2e4. \uc6d0\uc18c\ub098\uc5f4\ubc95\uc73c\ub85c \uc9d1\ud569\uc744 \ub098\ud0c0\ub0bc \ub54c\ub294 \uc6d0\uc18c\ub4e4\uc774 \ub098\uc5f4\ub41c \uc21c\uc11c\ub294 \uc911\uc694\ud558\uc9c0 \uc54a\ub2e4. \uadf8\ub9ac\uace0 \ud558\ub098\uc758 \uc6d0\uc18c\uac00 \ub450 \ubc88 \ud45c\ud604\ub41c \uac83\uc740 \uc758\ubbf8\uac00 \uc5c6\ub2e4. \uc989 \\(\\{ 2, 3, 5, 7\\}=\\{3, 7, 2, 5\\}=\\{7, 5, 3, 2\\}\\)\uc774\uace0 \\(\\{ 2, 2, 3, 5, 5, 5, 5, 7\\}\\)\uacfc \uac19\uc774 \uc6d0\uc18c\ub97c \uc911\ubcf5\ud574\uc11c \uc4f0\ub294 \ud45c\ud604\uc740 \uc798 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\ub294\ub2e4.<span id='easy-footnote-1-4333' class='easy-footnote-margin-adjust'><\/span><span class='easy-footnote'><a href='https:\/\/sasamath.com\/blog\/articles\/sasa-textbook-math1-01\/#easy-footnote-bottom-1-4333' title='\uc218\ud559\uc790\ub4e4\uc740 \uc4f8\ub370 \uc5c6\uc774  \uc789\ud06c\ub97c \ub0ad\ube44\ud558\ub294 \uac83\uc744 \uadf8\ub9ac \uc88b\uc544\ud558\uc9c0 \uc54a\ub294\ub2e4(\uc808\uc57d\uc815\uc2e0).'><sup>1<\/sup><\/a><\/span><br \/>\n \ud55c\ud3b8 \uc5b4\ub5a0\ud55c \uacbd\uc6b0\uc5d0\ub294 \uc9d1\ud569\uc758 \uc6d0\uc18c\ub4e4\uc744 \uc77c\uc77c\uc774 \ub098\uc5f4\ud558\ub294 \uac83\ubcf4\ub2e4 \uadf8 \uc9d1\ud569\uc758 \uc6d0\uc18c\uac00 \ub420 \uc870\uac74\uc744 \uba85\uc2dc\ud558\uc5ec \ub098\ud0c0\ub0b4\ub294 \uac83\uc774 \ud544\uc694\ud560 \ub54c\uac00 \uc788\ub2e4. \uc608\ub97c \ub4e4\uc5b4<br \/>\n\\[<br \/>\nA=\\{ n\\in\\mathbb{N} \\mid n<10, \\mbox{\\(n\\)\uc740 \uc18c\uc218}\\}\n\\]\n\ub294 \\(A\\)\uac00 '\\(n<10\\)'\uacfc '\\(n\\)\uc740 \uc18c\uc218'\ub77c\ub294 \uc870\uac74\uc744 \ub9cc\uc871\uc2dc\ud0a4\ub294 \\(\\mathbb{N}\\)\uc758 \uc6d0\uc18c \\(n\\)\ub4e4\uc758 \ubaa8\uc784\uc774\ub77c\ub294 \ub73b\uc774\ub2e4.[efn_note] \\(\\mathbb{N}\\)\uc740 \uc790\uc5f0\uc218 \uc804\uccb4\uc758 \uc9d1\ud569\uc774\ub2e4. \uadf8\ub9ac\uace0 \uc911\uad04\ud638 \uc548\uc5d0 \uc788\ub294 \uae30\ud638 '\\(\\mid\\)'\ub294 'such that'\uc744 \uc758\ubbf8\ud558\ub294 \uae30\ud638\uc774\ub2e4.[\/efn_note]   \n\ub530\ub77c\uc11c \\(A\\)\ub294 \uc9d1\ud569 \\(\\{2, 3, 5, 7\\}\\)\uc744 \ub098\ud0c0\ub0b8\ub2e4. \uc774\uc640 \uac19\uc774 \uc870\uac74\uc744 \uba85\uc2dc\ud558\uc5ec \uc9d1\ud569\uc744 \ub098\ud0c0\ub0b4\ub294 \ubc29\ubc95\uc744 <span class=\"defined\"> \uc870\uac74\uc81c\uc2dc\ubc95<\/span>\uc774\ub77c\uace0 \ud55c\ub2e4.\n<\/p>\n<p> <span class=\"definition\"> \ubcf4\uae30 <\/span><br \/>\n\ub2e4\uc74c\uc740 \uac01 \uc9d1\ud569\ub4e4\uc744 \uc6d0\uc18c\ub098\uc5f4\ubc95\uacfc \uc870\uac74\uc81c\uc2dc\ubc95\uc73c\ub85c \ub098\ud0c0\ub0b8 \uc608\uc774\ub2e4.<\/p>\n<ol class=\"parenthesis\">\n<li> \\(\\{1,2,3,4,5,6,7,8,9,10\\}=\\{ x\\in\\mathbb{N} \\mid \\mbox{\\(x\\)\ub294 \\(10\\) \uc774\ud558\uc758 \uc790\uc5f0\uc218}\\}\\) <\/li>\n<li> \\(\\{1,2,3,4,6,9,12,18,27,36,54,108\\} =\\{ x\\in\\mathbb{N} \\mid \\mbox{\\(x\\)\ub294 \\(108\\)\uc758 \uc591\uc758 \uc57d\uc218}\\} \\) <\/li>\n<li> \\(\\{2, 4, 6, 8, \\ldots\\}=\\{ x\\in\\mathbb{N} \\mid \\mbox{\\(x\\)\ub294 \uc9dd\uc218}\\}\\) <\/li>\n<\/ol>\n<p>\n\uc9d1\ud569\uc744 \uadf8\ub9bc\uc73c\ub85c \ub098\ud0c0\ub0bc \uc218\ub3c4 \uc788\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \uc9d1\ud569 \\(A\\)\ub97c \\(6\\)\uc758 \uc57d\uc218\ub4e4 \uc804\uccb4\uc758 \uc9d1\ud569\uc774\ub77c\uace0 \ud558\uba74, \\(A\\)\uc758 \uc6d0\uc18c\ub294 \\(1, 2, 3, 6\\)\uc774\ubbc0\ub85c \uc774\ub97c \ub2e4\uc74c  \uadf8\ub9bc\uacfc \uac19\uc774 \ub098\ud0c0\ub0bc \uc218 \uc788\ub2e4.<br \/>\n<img decoding=\"async\" src=\"https:\/\/coslimites.com\/wp-content\/uploads\/2020\/03\/fig-101.png\" alt=\"\" width=\"150\" height=\"150\" class=\"aligncenter size-full wp-image-1936\" \/><br \/>\n<br \/>\n  \uc774\uc640 \uac19\uc740 \uadf8\ub9bc\uc744 <span class=\"defined\"> \ubca4 \ub2e4\uc774\uc5b4\uadf8\ub7a8<\/span>\uc774\ub77c\uace0 \ud55c\ub2e4. \uc774\ucc98\ub7fc \uadf8\ub9bc\uc744 \ud1b5\ud574 \uc9d1\ud569\uc758 \uc6d0\uc18c\uae4c\uc9c0 \ub098\ud0c0\ub0bc \ub54c\uc5d4 \uc6d0\uc18c\ub098\uc5f4\ubc95 \ud639\uc740 \uc870\uac74\uc81c\uc2dc\ubc95\uc744 \ud568\uaed8 \uc0ac\uc6a9\ud574\uc57c \ud55c\ub2e4. \ubca4 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc740 \uc9d1\ud569\ub4e4 \uac04\uc758 \ub17c\ub9ac\uc801 \uad00\uacc4\ub97c \uc2dc\uac01\uc801\uc73c\ub85c \uc190\uc27d\uac8c \ub098\ud0c0\ub0bc \uc218 \uc788\ub294 \uc7a5\uc810\uc774 \uc788\uc9c0\ub9cc, \ub098\ud0c0\ub0b4\uc57c \ud560 \uc9d1\ud569\uc758 \uc218\uac00 \ub9ce\uc544\uc9c8 \uacbd\uc6b0\uc5d0\ub294 \uc624\ud788\ub824 \ubd88\ud3b8\ud560 \uc218 \uc788\ub2e4.<span id='easy-footnote-2-4333' class='easy-footnote-margin-adjust'><\/span><span class='easy-footnote'><a href='https:\/\/sasamath.com\/blog\/articles\/sasa-textbook-math1-01\/#easy-footnote-bottom-2-4333' title='\ub2f9\uc7a5 4&amp;#8211;5\uac1c\uc758 \uc9d1\ud569\uc744 \ubca4 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc73c\ub85c \ud55c\uaebc\ubc88\uc5d0 \ub098\ud0c0\ub0b4\ub294 \uac83\uc744 \uc2dc\ub3c4\ud574\ubcf4\ub77c.'><sup>2<\/sup><\/a><\/span>\n<\/p>\n<p>\n\uc9d1\ud569\uc744 \uc6d0\uc18c\uc758 \uac1c\uc218\uc5d0 \ub530\ub77c \ub450 \uc885\ub958\ub85c \ubd84\ub958\ud558\uae30\ub3c4 \ud55c\ub2e4. \uc6d0\uc18c\uac00 \uc720\ud55c\uac1c\uc778 \uc9d1\ud569\uc744 \uc720\ud55c\uc9d1\ud569\uc774\ub77c\uace0 \ud558\uba70, \uc6d0\uc18c\uac00 \ubb34\ud55c\ud788 \ub9ce\uc740 \uc9d1\ud569\uc744 \ubb34\ud55c\uc9d1\ud569\uc774\ub77c\uace0 \ud55c\ub2e4.<span id='easy-footnote-3-4333' class='easy-footnote-margin-adjust'><\/span><span class='easy-footnote'><a href='https:\/\/sasamath.com\/blog\/articles\/sasa-textbook-math1-01\/#easy-footnote-bottom-3-4333' title='&amp;#8216;\uc720\ud55c&amp;#8217;, &amp;#8216;\ubb34\ud55c&amp;#8217;&amp;#8230; \ubb58\uae4c&amp;#8230; '><sup>3<\/sup><\/a><\/span> \ud55c\ud3b8, \uc608\ub97c \ub4e4\uc5b4 \\(\\{ x \\mid \\mbox{\\(x\\)\ub294 \\(1\\)\ubcf4\ub2e4 \ud06c\uace0 \\(2\\)\ubcf4\ub2e4 \uc791\uc740 \uc790\uc5f0\uc218}\\}\\)\ucc98\ub7fc \uc6d0\uc18c\uac00 \ud558\ub098\ub3c4 \uc5c6\ub294 \uc9d1\ud569\uc744 <span class=\"defined\"> \uacf5\uc9d1\ud569<\/span>\uc774\ub77c \ud558\uace0 \uae30\ud638\ub85c<br \/>\n\\[<br \/>\n\\varnothing\\quad\\mbox{\ud639\uc740}\\quad\\emptyset<br \/>\n\\]<br \/>\n\uc640 \uac19\uc774 \ub098\ud0c0\ub0b8\ub2e4. \ubb3c\ub860 \uacf5\uc9d1\ud569\uc740 \uc720\ud55c\uc9d1\ud569\uc774\ub2e4.\n<\/p>\n<p>\n\uc9d1\ud569 \\(A\\)\uac00 \uc720\ud55c\uc9d1\ud569\uc77c \ub54c, \uc9d1\ud569 \\(A\\)\uc758 \uc6d0\uc18c\uc758 \uac1c\uc218\ub97c \uae30\ud638\ub85c<br \/>\n\\[<br \/>\nn(A)<br \/>\n\\]<br \/>\n\uc640 \uac19\uc774 \ub098\ud0c0\ub0b8\ub2e4.<span id='easy-footnote-4-4333' class='easy-footnote-margin-adjust'><\/span><span class='easy-footnote'><a href='https:\/\/sasamath.com\/blog\/articles\/sasa-textbook-math1-01\/#easy-footnote-bottom-4-4333' title='\uc9d1\ud569\uc758 \uc6d0\uc18c\uc758 \uac1c\uc218\ub97c \ub098\ud0c0\ub0bc \ub54c  \\(\\vert A\\vert\\) \ud639\uc740 \\(\\# (A)\\)\uc640 \uac19\uc740 \ud45c\uae30\ub3c4 \ub9ce\uc774 \uc0ac\uc6a9\ud55c\ub2e4.'><sup>4<\/sup><\/a><\/span> \uc608\ub97c \ub4e4\uc5b4 \uc9d1\ud569 \\(A=\\{ 0, 1, 2, 3, 4\\}\\)\ub294 \uc6d0\uc18c\uc758 \uac1c\uc218\uac00 \\(5\\)\uc774\ubbc0\ub85c \\(n(A)=5\\)\uc774\uace0 \uacf5\uc9d1\ud569\uc740 \uc6d0\uc18c\uac00 \ud558\ub098\ub3c4 \uc5c6\uc73c\ubbc0\ub85c \\(n(\\varnothing)=0\\)\/\uc774\ub2e4.\n<\/p>\n<h3> \uba85\uc81c\uc640 \uc870\uac74<\/h3>\n<p>\n\uc9d1\ud569\uc758 \ub73b\uacfc \ud45c\ud604\uc744 \uc0b4\ud3b4\ubcf8 \ud6c4\uc5d0\ub294 &#8216;\uc9d1\ud569\uc758 \uc5f0\uc0b0&#8217;\uc5d0 \ub300\ud574 \uacf5\ubd80\ud558\ub294 \uac83\uc774 \ubcf4\ud1b5\uc774\uc9c0\ub9cc, \uc6b0\ub9ac\ub294 \uc880 \ub354 \uba85\ub8cc\ud558\uac8c \uadf8 \uc774\ub860\ub4e4\uc744 \uc0b4\ud3b4\ubcf4\uae30 \uc704\ud574 &#8216;\uba85\uc81c&#8217;\uc5d0 \ub300\ud574 \uc0b4\ud3b4\ubcf4\uace0\uc790 \ud55c\ub2e4.\n<\/p>\n<p>\n\uc218\ud559\uc5d0\uc11c\ub294 \uc774\ub860\uc744 \uc5c4\ubc00\ud558\uace0 \uc77c\uad00\ub418\uac8c \uc804\uac1c\ud558\uae30 \uc704\ud574 \uc77c\uc815\ud55c \ud615\uc2dd\uc744 \uac16\ub294 \uc5b8\uc5b4\ub97c \uc0ac\uc6a9\ud558\ub294\ub370  \uc774\ub7ec\ud55c \ud615\uc2dd\uc5b8\uc5b4\ub294 \uba85\uc81c\uc758 \ud615\ud0dc\ub97c \ub744\uace0 \uc788\ub2e4. \ud615\uc2dd\uc5b8\uc5b4\ub97c \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc740 \uc9c4\uc220\uc740 \uadf8 \uc758\ubbf8\uac00 \ubaa8\ud638\ud558\uace0 \ubcc0\uc9c8\ub418\uae30 \uc27d\ub2e4.<span id='easy-footnote-5-4333' class='easy-footnote-margin-adjust'><\/span><span class='easy-footnote'><a href='https:\/\/sasamath.com\/blog\/articles\/sasa-textbook-math1-01\/#easy-footnote-bottom-5-4333' title=' \uba85\uc81c \ubc0f \uc9d1\ud569\uc758 \uc774\ub860\uc744 \ub300\ud558\uc5ec \uacf5\ubd80\ud574\uc57c \ud558\ub294 \uc774\uc720\ub294 \ubc14\ub85c \uc5ec\uae30\uc5d0 \uc788\ub2e4.'><sup>5<\/sup><\/a><\/span> \uadf8\ub7ec\ub098 \uba85\uc81c \uadf8 \uc790\uccb4\uc758 \uc758\ubbf8\ub294 \uba85\uc81c\uc758 \ud615\ud0dc\ub85c \uc9c4\uc220\ub418\uae30 \uc5b4\ub835\ub2e4. \ub530\ub77c\uc11c \uc218\ud559\uc801 \ub17c\ub9ac\ub97c \uc804\uac1c\ud574 \ub098\uac00\uae30 \uc704\ud574 \ud544\uc694\ud55c \ub9e4\uc6b0 \uae30\ucd08\uc801\uc778 \uba87\uba87 \uac1c\ub150\uc5d0 \ub300\ud574\uc11c\ub294 \uc77c\uc0c1\uc801\uc73c\ub85c \uc0ac\uc6a9\ud558\ub294 \uc5b8\uc5b4\ub97c \ud1b5\ud574 \uc9c4\uc220\ud55c\ub2e4.<span id='easy-footnote-6-4333' class='easy-footnote-margin-adjust'><\/span><span class='easy-footnote'><a href='https:\/\/sasamath.com\/blog\/articles\/sasa-textbook-math1-01\/#easy-footnote-bottom-6-4333' title='\uc815\ub9d0 \uc5c4\ubc00\ud558\uac8c &amp;#8216;\ub17c\ub9ac\uc758 \ubc14\ub2e5&amp;#8217;\ubd80\ud130 \uacf5\ubd80\ud558\uace0\uc790 \ud558\ub294 \uac83\uc740 \uba87 \ub144 \ub4a4\ub85c \ubbf8\ub8e8\ub294 \uac83\uc774 \ubc14\ub78c\uc9c1\ud558\ub2e4. \uc218\ud559\uc758 \ub17c\ub9ac \uc790\uccb4\ub97c \uacf5\ubd80\ud558\ub294 \ud559\ubb38\uc744 &amp;#8216;\uc218\ud559 \uae30\ucd08\ub860&amp;#8217;\uc774\ub77c \ud558\ub294\ub370 \uc774\ub294 \uc218\ud559\uc758 \uae30\ucd08\ub97c \uc81c\ub300\ub85c \uacf5\ubd80\ud55c \ud6c4\uc5d0 \ud558\ub294 \uac83\uc774 \ubc14\ub78c\uc9c1\ud558\ub2e4.'><sup>6<\/sup><\/a><\/span>\n<\/p>\n<p>\n\uc774\uc81c \uba85\uc81c\uc640 \uadf8\uac83\uc744 \uc774\uc6a9\ud55c \uae30\ucd08\uc801\uc778 \ub17c\ub9ac\uc5d0 \ub300\ud558\uc5ec \uc0b4\ud3b4\ubcf4\uc790.\n<\/p>\n<div class=\"definition\">\n<p>\n\t\t<span class=\"definition\"> Definition 1.1.1 <\/span> <br \/>\n\ubb38\uc7a5\ub4e4 \uc911\uc5d0\uc11c \ucc38 \ub610\ub294 \uac70\uc9d3\uc778 \uac83\uc744 <span class=\"defined\"> \uba85\uc81c<\/span>\ub77c\uace0 \ud55c\ub2e4.\n<\/p>\n<\/div>\n<p>\n\uc608\ub97c \ub4e4\uc5b4 &#8216;\\(3\\)\uc740 \ud640\uc218\uc774\ub2e4&#8217;\ub294 \ucc38\uc778 \uba85\uc81c\uc774\uba70 &#8216;\uc790\uc5f0\uc218\uc758 \uac1c\uc218\ub294 \uc720\ud55c\uc774\ub2e4&#8217;\ub294 \uac70\uc9d3\uc778 \uba85\uc81c\uc774\ub2e4. \uadf8\ub7ec\ub098 &#8216;\uc6b0\ub9ac\ud559\uad50 \uae09\uc2dd\uc740 \ub9db\uc788\ub2e4&#8217;, &#8216;\uc624\ub298 \ub0a0\uc528\uac00 \uc88b\uc73c\ub0d0?&#8217;\uc640 \uac19\uc740 \ubb38\uc7a5\uc740 \uba85\uc81c\uac00 \uc544\ub2c8\ub2e4. \uba85\uc81c\uc5d0\ub294 \ucc38, \uac70\uc9d3 \uc911 \uc5b4\ub290 \ud55c\ucabd\uc774\uc5b4\uc57c \ud568\uc744 \ubd84\uba85\ud788 \uac00\ub9b4\ub9cc\ud55c \uc870\uac74\uc774 \uac16\ucd94\uc5b4\uc838 \uc788\uc5b4\uc57c \ud55c\ub2e4. \uba85\uc81c\uc758 \ucc38, \uac70\uc9d3\uc740 \uace7\ubc14\ub85c \uc815\ud560 \uc218 \uc788\ub294 \uacbd\uc6b0\ub3c4 \uc788\uace0 \uacbd\uc6b0\uc5d0 \ub530\ub77c\uc11c\ub294 \ub178\ub825\uc774 \ub2e4\uc18c \ub4e4 \ub54c\uac00 \uc788\uc73c\uba70, \uacb0\ub860\uc5d0 \ub3c4\ub2ec\ud560 \uc218 \uc5c6\ub294 \uacbd\uc6b0\ub3c4 \uc788\ub2e4.\n<\/p>\n<p>\n\ucc38 \uac70\uc9d3 \uc5ec\ubd80\ub97c \uacb0\uc815\ud558\ub294 \ud558\ub098\uc758 \uc9c4\uc220\ub9cc\uc744 \ud3ec\ud568\ud558\uace0 \uc788\ub294 \uba85\uc81c\ub97c \ub2e8\uc21c\uba85\uc81c(simple statement)\ub77c\uace0 \ud558\uace0, \ub458 \uc774\uc0c1\uc758 \ub2e8\uc21c\uba85\uc81c\uac00 \uacb0\ud569\ub41c \uac83\uc744 \ud569\uc131\uba85\uc81c(compounded statement)\ub77c\uace0 \ud55c\ub2e4. \uc774\ub97c\ud14c\uba74,<\/p>\n<blockquote><p>\n&#8221;\ub098\ub294 \uc5ec\uc790\uc774\uace0 \ub0b4 \ub3d9\uc0dd\uc740 \ub0a8\uc790\uc774\ub2e4.&#8221;\n<\/p><\/blockquote>\n<p>\ub77c\ub294 \uba85\uc81c\ub294 &#8216;\ub098\ub294 \uc5ec\uc790\uc774\ub2e4.&#8217;\ub77c\ub294 \uba85\uc81c\uc640 &#8216;\ub0b4 \ub3d9\uc0dd\uc740 \ub0a8\uc790\uc774\ub2e4.&#8217;\ub77c\ub294 \uba85\uc81c\uac00 \ud569\uc131\ub41c \uac83\uc774\ub2e4.\n<\/p>\n<p>\n\ud754\ud788 \uc218\ub97c \ub098\ud0c0\ub0bc \ub54c \ubb38\uc790\ub97c \uc0ac\uc6a9\ud558\ub4ef\uc774 \ub17c\ub9ac\uc5d0 \uc788\uc5b4\uc11c\ub3c4 \uba85\uc81c\ub97c \\(p, q, r, \\ldots\\)\uacfc \uac19\uc774 \ubb38\uc790\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub098\ud0c0\ub0bc \uc218 \uc788\ub2e4.<br \/>\n\uba85\uc81c\ub97c \uc5f0\uacb0\ud558\uc5ec \ud569\uc131\uba85\uc81c\ub97c \uad6c\uc131\ud558\ub294 \ubc29\ubc95\uc740 \uc5ec\ub7ec \uac00\uc9c0\uac00 \uc788\uc73c\ub098 \ud754\ud788 \uc774\uc6a9\ub418\uace0 \uc788\ub294 \uac83\uc73c\ub85c\ub294 \ub2e4\uc12f \uac00\uc9c0\uac00 \uc788\ub2e4. \uc774 \ub2e4\uc12f \uac00\uc9c0\uc758 \uacb0\ud569\uc790(connective)\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.\n<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/coslimites.com\/wp-content\/uploads\/2020\/03\/tab-101.png\" alt=\"\" width=\"400\" height=\"\" class=\"aligncenter size-full wp-image-1936\" \/><\/p>\n<p>\n\uc704 \uc815\uc758\ub9cc\uc73c\ub85c\ub294 \uacb0\ud569\uc790\uc758 \uc758\ubbf8\ub97c \uc815\ud655\ud558\uac8c \ud30c\uc545\ud560 \uc218 \uc5c6\uc73c\ubbc0\ub85c \uc9c0\uae08\ubd80\ud130 &#8216;\uc9c4\ub9ac\ud45c&#8217;\ub97c \uc774\uc6a9\ud558\uc5ec \uacb0\ud569\uc790\uc758 \uc758\ubbf8\ub97c \uc0b4\ud3b4\ubcf4\uc790.\n<\/p>\n<p>\n\ud558\ub098\uc758 \uba85\uc81c \\(p\\)\uc5d0 \ub300\ud558\uc5ec &#8216;\\(p\\)\uc758 <span class=\"defined\"> \ubd80\uc815<\/span>&#8216;\uc774\ub77c\uace0 \ubd80\ub974\ub294 \\(\\sim p\\)\ub294 \uba85\uc81c \\(p\\)\uac00 \uac70\uc9d3\uc77c \ub54c\uc5d0 \ucc38\uc774\uace0, \\(p\\)\uac00 \ucc38\uc77c \ub54c\uc5d0 \uac70\uc9d3\uc778 \uba85\uc81c\uc774\ub2e4. \uc989 \uba85\uc81c \\(\\sim p\\)\uc758 \ucc38, \uac70\uc9d3 \uc5ec\ubd80\ub294 \uba85\uc81c \\(p\\)\uc758 \ucc38, \uac70\uc9d3\uc5d0 \ub2ec\ub824\uc788\ub2e4. \uc774\ub7ec\ud55c \uc758\uc874\uc131\uc744 \ub2e4\uc74c\uacfc \uac19\uc740 \uc9c4\ub9ac\ud45c(truth table)\uc5d0 \uc2e4\uc5b4\ub450\uba74 \ud3b8\ub9ac\ud558\ub2e4.\n<\/p>\n<p>\n<img decoding=\"async\" src=\"https:\/\/coslimites.com\/wp-content\/uploads\/2020\/03\/tab-102.png\" alt=\"\" width=\"90\" height=\"\" class=\"aligncenter size-full wp-image-1936\" \/><\/p>\n<p>\ubb3c\ub860 \uc5ec\uae30\uc11c \ubb38\uc790 T\ub294 \ucc38, \ubb38\uc790 F\ub294 \uac70\uc9d3\uc744 \ub098\ud0c0\ub0b8\ub2e4. \uc704 \ud45c\uc758 \uccab\uc9f8 \uc5f4\uc740 \\(p\\)\uc5d0 \ub300\ud55c \ub450 \uac00\uc9c0 \uac00\ub2a5\ud55c \uc9c4\ub9bf\uac12(truth value), \uc989 T \ub610\ub294 F\ub97c \uae30\ub85d\ud558\uc600\ub2e4.\n<\/p>\n<p>\n\ub2e4\uc74c\uc73c\ub85c <span class=\"defined\"> \ub17c\ub9ac\uacf1<\/span>\uacfc <span class=\"defined\"> \ub17c\ub9ac\ud569<\/span>\uc744 \uc9c4\ub9ac\ud45c\ub85c \ub098\ud0c0\ub0b4\ubcf4\uba74 \ub2e4\uc74c\uacfc \uac19\ub2e4.<br \/>\n<img decoding=\"async\" src=\"https:\/\/coslimites.com\/wp-content\/uploads\/2020\/03\/tab-103.png\" alt=\"\" width=\"350\" height=\"\" class=\"aligncenter size-full wp-image-1936\" \/><\/p>\n<p>\n\ub17c\ub9ac\uacf1 \\(p\\wedge q\\)\uc640 \uac19\uc740 \ud569\uc131\uba85\uc81c\uc5d0 \ub300\ud558\uc5ec \uac01\uac01\uc758 \uba85\uc81c \\(p, q\\)\ub97c \uadf8 \uba85\uc81c\uc758 \uc131\ubd84(component)\uc774\ub77c\uace0 \ud55c\ub2e4. \ud569\uc131\uba85\uc81c\uc758 \uc131\ubd84\uc740 \ub2e8\uc21c\uba85\uc81c\uc774\uac70\ub098 \ud569\uc131\uba85\uc81c\uc77c \uc218\ub3c4 \uc788\ub2e4. \\(p\\wedge q\\)\uc640 \uac19\uc774 \ub450 \uc131\ubd84\uc73c\ub85c \uc774\ub8e8\uc5b4\uc9c4 \ud569\uc131\uba85\uc81c\uc5d0 \uc788\uc5b4\uc11c \uac80\ud1a0\ud574\uc57c \ud560 \ubaa8\ub4e0 \uac00\ub2a5\uc131, \uc774\ub978\ubc14 \ub17c\ub9ac\uc801 \uac00\ub2a5\uc131(logical possibility)\uc740 \ub9ce\uc544\uc57c \\(4\\)\uac00\uc9c0\uac00 \uc788\ub2e4.\n<\/p>\n<p>\n\uba85\uc81c\ub97c \ud569\uc131\ud560 \ub54c\uc5d0\ub294 \uad04\ud638\ub97c \ud1b5\ud574 \uc6b0\uc120\uc21c\uc704\ub97c \uc815\ud574\uc900\ub2e4. \uc608\ub97c \ub4e4\uc5b4<br \/>\n\\[<br \/>\n(q\\wedge r)\\vee p<br \/>\n\\]<br \/>\n\ub294 \\(q\\)\uc640 \\(r\\)\uc758 \ub17c\ub9ac\uacf1\uc758 \uacb0\uacfc\uc640 \\(p\\)\ub97c \ub17c\ub9ac\ud569 \ud558\ub294 \uac83\uc744 \ub73b\ud55c\ub2e4. \uadf8\ub9ac\uace0 \uad04\ud638\uac00 \uc5c6\uc744 \ub54c\uc5d0\ub294 \uc5f0\uacb0\uc0ac\uc758 \uc6b0\uc120\uc21c\uc704\ub294 \ubcf4\ud1b5 \\(\\sim, \\wedge, \\vee, \\longrightarrow, \\longleftrightarrow\\) \uc21c\uc73c\ub85c \uc4f0\uae30\ub3c4 \ud558\uc9c0\ub9cc \uc5ed\uc2dc \ubaa8\ud638\ud558\uc9c0 \uc54a\uac8c \uad04\ud638\ub97c \uc774\uc6a9\ud558\uc5ec \ub098\ud0c0\ub0b4\ub294 \uac83\uc774 \uac00\uc7a5 \uc88b\ub2e4\uace0 \ud560 \uc218 \uc788\uaca0\ub2e4.\n<\/p>\n<p>\n\ub2e4\uc74c\uc73c\ub85c \ub17c\ub9ac \uc870\uac74\uc744 \uc0b4\ud3b4\ubcf4\uc544\uc57c \ud558\ub294\ub370, \uadf8 \uc804\uc5d0 \ub17c\ub9ac\uc801 \ub3d9\uce58\uc758 \uac1c\ub150\uc744 \uc815\uc758\ud55c\ub2e4.\n<\/p>\n<div class=\"definition\">\n<p>\n\t\t<span class=\"definition\"> Definition 1.1.2 <\/span><br \/>\n\ub450 \uba85\uc81c \\(p, q\\)\uc5d0 \ub300\ud558\uc5ec \ubaa8\ub4e0 \ub17c\ub9ac\uc801 \uac00\ub2a5\uc131\uc758 \uac01\uac01\uc758 \uacbd\uc6b0\ub9c8\ub2e4 \uc9c4\ub9bf\uac12\uc774 \ub3d9\uc77c\ud560 \ub54c, \\(p\\)\uc640 \\(q\\)\ub294 <span class=\"defined\"> \ub17c\ub9ac\uc801 \ub3d9\uce58<\/span>(logically equivalent) \ub610\ub294 \uac04\ub2e8\ud558\uac8c <span class=\"defined\"> \ub3d9\uce58<\/span>(equivalent)\ub77c\uace0 \ub9d0\ud558\uace0 \uc774\uac83\uc744<br \/>\n\\[<br \/>\np\\equiv q<br \/>\n\\]<br \/>\n\uc640 \uac19\uc774 \ub098\ud0c0\ub0b8\ub2e4.\n<\/p>\n<\/div>\n<p>\n\t\t<span class=\"definition\"> \uc608\uc81c 1.1<\/span><br \/>\n\ub450 \uba85\uc81c \\(p, q\\)\uc5d0 \ub300\ud558\uc5ec \\(p\\vee q \\equiv\\ \\sim(\\sim p\\ \\wedge \\sim q)\\)\uc784\uc744 \ubcf4\uc5ec\ub77c.\n<\/p>\n<p class=\"proofbegin\">\n\t<span class=\"proof\">Sol.<\/span><br \/>\n\uba85\uc81c \\(\\sim (\\sim p\\ \\wedge \\sim q)\\)\uc758 \uc9c4\ub9ac\ud45c\ub97c \uc791\uc131\ud574\ubcf4\uba74 \ub2e4\uc74c\uacfc \uac19\ub2e4.<br \/>\n<img decoding=\"async\" src=\"https:\/\/coslimites.com\/wp-content\/uploads\/2020\/03\/tab-104.png\" alt=\"\" width=\"380\" height=\"\" class=\"aligncenter size-full wp-image-1936\" \/> <br \/>\n\ub530\ub77c\uc11c \uba85\uc81c  \\(\\sim(\\sim p\\ \\wedge \\sim q)\\)\uc758 \uc9c4\ub9bf\uac12\uc774 \uc55e\uc11c \uc0b4\ud3b4\ubcf8 \\(p\\vee q\\)\uc758 \uc9c4\ub9bf\uac12\uacfc \ub3d9\uc77c\ud568\uc744 \uc54c \uc218 \uc788\ub2e4.<br \/>\n<span class=\"qed\"><\/span>\n<\/p>\n<p>\n\uc784\uc758\uc758 \ub450 \uba85\uc81c \\(p\\)\uc640 \\(q\\) \uc0ac\uc774\uc5d0 <span class=\"defined\"> \uc870\uac74\ubd80<\/span>(conditional)\ub77c\uace0 \ubd88\ub9ac\ub294 \uacb0\ud569\uc790 \\(\\longrightarrow\\)\ub97c \ubd99\uc5ec\uc11c \ub9cc\ub4e0 \ud569\uc131\uba85\uc81c \\(p\\longrightarrow q\\)\ub294 \\(\\sim p \\vee q\\)\uc640 \ub3d9\uce58\uc778 \uac83\uc73c\ub85c \uc815\uc758\ub418\uba70 \uc774\ub97c \uc9c4\ub9ac\ud45c\ub85c \ub098\ud0c0\ub0b4\uba74 \ub2e4\uc74c\uacfc \uac19\ub2e4.\n<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/coslimites.com\/wp-content\/uploads\/2020\/03\/tab-105.png\" alt=\"\" width=\"150\" height=\"\" class=\"aligncenter size-full wp-image-1936\" \/><\/p>\n<p>\n\uc870\uac74\ubd80\uc758 \uc9c4\ub9ac\ud45c\ub97c \uc0b4\ud3b4\ubcf4\uba74 \\(p\\)\uac00 \ucc38\uc774\uace0 \\(q\\)\uac00 \uac70\uc9d3\uc778 \uacbd\uc6b0\ub97c \uc81c\uc678\ud558\uba74 \\(p\\longrightarrow q\\)\ub294 \ucc38\uc774\ub2e4. \uc77c\uc0c1\uc801\uc778 \uc5b8\uc5b4\uc5d0\uc11c\ub294 &#8216;\ud1a0\ub07c\uac00 \uc2dd\ubb3c\uc774\uba74 \uac10\uc790\ub294 \ub3d9\ubb3c\uc774\ub2e4.&#8217;\uc640 \uac19\uc740 \ub9d0\uc740 \ud1a0\ub07c\uac00 \uc2dd\ubb3c\uc774 \uc544\ub2c8\uace0 \uac10\uc790\ub294 \ub3d9\ubb3c\uc774 \uc544\ub2c8\uae30 \ub54c\ubb38\uc5d0 \ubb34\uc758\ubbf8\ud55c \ubb38\uc7a5\uc774 \ub41c\ub2e4. \ud558\uc9c0\ub9cc \uc774 \ubb38\uc7a5\uc744 \uba85\uc81c\uc758 \ub17c\ub9ac\ub85c \uc0b4\ud3b4\ubcf4\uba74 \ucc38\uc778 \uba85\uc81c\uac00 \ub41c\ub2e4. \uc774\ucc98\ub7fc \uc77c\uc0c1 \uc5b8\uc5b4\uc5d0\uc11c\ub294 \uc758\ubbf8 \uc5c6\uc774 \uacb0\ud569\ub41c \ubb38\uc7a5\uc774\ub77c\ub3c4 \ub17c\ub9ac\uc801\uc73c\ub85c \ubcf4\uba74 \ucc38, \uac70\uc9d3\uc744 \uc815\ud560 \uc218 \uc788\ub294 \uba85\uc81c\uac00 \ub420 \uc218 \uc788\ub2e4. % \uc774\ub7ec\ud55c \ubb38\uc7a5\uc744 \ud615\uc2dd\uc801 \uc5b8\uc5b4\ub77c\uace0 \ud55c\ub2e4\n<\/p>\n<p>\n\uba85\uc81c \\(p\\longrightarrow q\\)\uac00 \\(\\sim p\\vee q\\)\ub85c \uc815\uc758\ub41c \uac83\uc740 \ub17c\ub9ac\ubc95\uce59\ub4e4 \uc911\uc5d0 \uc870\uae08\uc740 \uc774\uc0c1\ud558\uac8c \ub290\uaef4\uc9c8 \uc218 \uc788\ub294\ub370 &#8216;\\(p\\)\uc774\uba74 \\(q\\)\uc774\ub2e4.&#8217;\ub77c\ub294 \ub9d0\uc740 \\(p\\)\uac00 \ucc38\uc77c \ub54c \\(q\\)\uac00 \ucc38\uc774\ub77c\ub294 \uc8fc\uc7a5\uc774\ubbc0\ub85c \\(p\\)\uac00 \uac70\uc9d3\uc77c \ub54c\ub294 \\(q\\)\uc758 \uc9c4\uc704\uc5d0 \uad00\uacc4\uc5c6\uc774 \ucc38\uc778 \ub9d0\uc774 \ub418\ub294 \uac83\uc774\ub2e4. \uc608\ub97c \ub4e4\uc5b4 &#8221;\uc0bc\uac01\ud615\uc758 \ub0b4\uac01\uc758 \ud569\uc774 \\(360\\)\ub3c4\ub77c\uba74 \\(2\\)\uc758 \\(10\\)\uc81c\uacf1\uc740 \\(37\\)\uc774\ub2e4.&#8221;\ub294 \ucc38\uc778 \uba85\uc81c\uc774\ub2e4. \uc774\uc640 \uac19\uc774 \uac00\uc815\uc774 \uac70\uc9d3\uc774\ub77c\uc11c \uacb0\ub860\uc5d0 \uad00\uacc4\uc5c6\uc774 \ucc38\uc774 \ub418\ub294 \uacbd\uc6b0\ub97c vacuously true\uc778 \uacbd\uc6b0\ub77c\uace0 \ud55c\ub2e4. <\/p>\n<p>\n\t\t<span class=\"definition\"> \uc720\uc81c 1.2 <\/span><br \/>\n\ub2e4\uc74c \uac01 \uba85\uc81c\uc758 \uc9c4\ub9ac\ud45c\ub97c \uc791\uc131\ud558\uc5ec\ub77c.<\/p>\n<ol class=\"parenthesis\">\n<li> \\((p\\wedge q)\\wedge r\\) <\/li>\n<li> \\(p\\wedge (q\\wedge r)\\) <\/li>\n<li> \\((p\\ \\vee \\sim q)\\wedge r\\) <\/li>\n<li> \\(\\sim (p\\wedge q)\\vee r\\) <\/li>\n<li> \\(p\\longleftrightarrow q\\)  <\/li>\n<li> \\((p \\wedge q)\\vee(\\sim p\\ \\wedge \\sim q)\\) <\/li>\n<\/ol>\n<p>\n\t\t<span class=\"definition\"> \uc720\uc81c 1.3 <\/span><br \/>\n\uba85\uc81c \\(p\\)\uac00 &#8216;\ub098\ub294 \ud3ad\uc218\uc774\ub2e4.&#8217;, \uba85\uc81c \\(q\\)\uac00 &#8216;\ub098\ub294 \ube4c\ub7f0\uc774\ub2e4.&#8217;\uc77c \ub54c, \ub2e4\uc74c\uc758 \ud569\uc131\uba85\uc81c\ub97c \uc790\uc5f0\uc2a4\ub7ec\uc6b4 \ubb38\uc7a5\uc73c\ub85c \ub9cc\ub4e4\uc5b4\ub77c.<\/p>\n<ol class=\"parenthesis\">\n<li> \\(p\\vee q\\)  <\/li>\n<li> \\(p\\wedge q\\) <\/li>\n<li> \\(p\\longrightarrow q\\)  <\/li>\n<li> \\(\\sim p\\longrightarrow\\ \\sim q\\) <\/li>\n<li> \\(\\sim q\\longrightarrow\\ \\sim p\\)  <\/li>\n<li> \\(\\sim p\\wedge q\\)\n<\/ol>\n<\/p>\n<p>\n\t\t<span class=\"definition\"> \uc720\uc81c 1.4 <\/span><br \/>\n\uba85\uc81c \\(p\\)\uac00 &#8216;\ub098\ub294 \ud3ad\uc218\uc774\ub2e4.&#8217;\uc774\uace0, \uba85\uc81c \\(q\\)\uac00 &#8216;\ub098\ub294 \ube4c\ub7f0\uc774\ub2e4.&#8217;\uc77c \ub54c, \ubb38\uc7a5\uc73c\ub85c \ub41c \ub2e4\uc74c\uc758 \uba85\uc81c\ub97c \uae30\ud638\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud45c\ud604\ud558\uc5ec\ub77c.<\/p>\n<ol class=\"parenthesis\">\n<li> \ub098\ub294 \ud3ad\uc218\uc774\uc9c0\ub9cc \ube4c\ub7f0\uc740 \uc544\ub2c8\ub2e4. <\/li>\n<li> \ub098\ub294 \ube4c\ub7f0\uc774\ubbc0\ub85c \ud3ad\uc218\uc774\ub2e4. <\/li>\n<li> \ub0b4\uac00 \ube4c\ub7f0\uc774\ub824\uba74 \ub098\ub294 \ud3ad\uc218\uc774\uc5b4\uc57c \ud55c\ub2e4. <\/li>\n<li> \ub0b4\uac00 \ud3ad\uc218\uc774\uba74 \ub098\ub294 \ube4c\ub7f0\uc774 \uc544\ub2c8\ub2e4. <\/li>\n<\/ol>\n<p>\n\ud55c\ud3b8 \ubb38\uc7a5\ub4e4 \uc911\uc5d0\uc11c\ub294<br \/>\n\\[<br \/>\n\\text{\\(x\\)\ub294 \\(6\\)\uc758 \uc57d\uc218\uc774\ub2e4.}<br \/>\n\\]<br \/>\n\ucc98\ub7fc \ubcc0\uc218 \\(x\\)\uc5d0 \ud2b9\uc815\ud55c \uacbd\uc6b0\ub97c \ub300\uc785\ud588\uc744 \ub54c \uba85\uc81c\uac00 \ub418\ub294 \uacbd\uc6b0\uac00 \uc788\ub2e4. \uc774\ub7ec\ud55c \ubb38\uc7a5\uc744 <span class=\"defined\"> \uc870\uac74<\/span>\uc774\ub77c\uace0 \ud55c\ub2e4. \uc774 \ub54c, \uc774 \uc870\uac74\uc774 \ucc38\uc778 \\(x\\)\ub4e4\uc744 \ubaa8\ub450 \ubaa8\uc544 \ub193\uc740 \uc9d1\ud569\uc744 \uc0dd\uac01\ud560 \uc218 \uc788\ub294\ub370 \uc774 \uc9d1\ud569\uc744 \uadf8 \uc870\uac74\uc758 <span class=\"defined\"> \uc9c4\ub9ac\uc9d1\ud569<\/span>\uc774\ub77c\uace0 \ubd80\ub978\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \uc704\uc5d0\uc11c \uc81c\uc2dc\ud55c \uc870\uac74\uc758 \uc9c4\ub9ac\uc9d1\ud569\uc740<br \/>\n\\[<br \/>\nP=\\{ x\\mid \\mbox{\\(x\\)\ub294 \\(6\\)\uc758 \uc57d\uc218}\\}<br \/>\n\\]<br \/>\n\uc774\ub2e4. \uc774\ub807\uac8c \uc9d1\ud569 \\(P\\)\ub97c \uc124\uc815\ud558\uace0\ub098\uba74  &#8216;\\(x\\)\ub294 \\(6\\)\uc758 \uc57d\uc218\uc774\ub2e4.&#8217;\ub77c\uace0 \ub9d0\ud558\ub294 \uac83\uc774\ub098 &#8216;\\(x\\in P\\)&#8217;\ub77c\uace0 \ud558\ub294 \uac83\uc774\ub098 \ub3d9\uc77c\ud55c \ub9d0\uc774 \ub41c\ub2e4. \uc9d1\ud569\uc744 \ud45c\ud604\ud560 \ub54c, \uc774\ubbf8 \uc54c\uace0 \uc788\ub294 \uc9d1\ud569\uc744 \uc0c1\uc815\ud558\uace0 \uadf8\uac83\uc758 \uc6d0\uc18c\ub4e4 \uac00\uc6b4\ub370 \ud2b9\uc815 \uc870\uac74\uc744 \ub9cc\uc871\uc2dc\ud0a4\ub294 \uc6d0\uc18c\ub4e4\uc744 \ubaa8\uc74c\uc73c\ub85c\uc368 \uc9d1\ud569\uc744 \uad6c\uc131\ud558\ub294 \uacbd\uc6b0\uac00 \ub9ce\ub2e4. \uc774\ub54c \ucc98\uc74c \uac00\uc815\ud558\ub294 \uc9d1\ud569\uc744 <span class=\"defined\"> \uc804\uccb4\uc9d1\ud569<\/span>\uc774\ub77c\uace0 \ubd80\ub974\uace0 \ubcf4\ud1b5 \uae30\ud638\ub85c\ub294 \\(U\\)\ub85c \ub098\ud0c0\ub0b8\ub2e4. \uc804\uccb4\uc9d1\ud569 \\(U\\)\ub97c \uac00\uc815\ud558\uace0 \uc788\ub294 \uacbd\uc6b0, \uc870\uac74 \\(p(x)\\)\uac00 \uc9d1\ud569 \\(U\\)\uc5d0\uc11c \uc815\uc758\ub418\uc5b4 \uc788\ub2e4\uace0 \ub9d0\ud55c\ub2e4. <span id='easy-footnote-7-4333' class='easy-footnote-margin-adjust'><\/span><span class='easy-footnote'><a href='https:\/\/sasamath.com\/blog\/articles\/sasa-textbook-math1-01\/#easy-footnote-bottom-7-4333' title='\ubcc0\uc218 \\(x\\)\ub97c \uc0ac\uc6a9\ud55c \uc870\uac74\uc744 \\(p(x), q(x),\\ldots\\)\uc640 \uac19\uc774 \ubb38\uc790\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub098\ud0c0\ub0b8\ub2e4. \ub54c\ub85c\ub294 \uc808\uc57d\uc815\uc2e0\uc744 \ubc1c\ud718\ud574 \uadf8\ub0e5 \\(p, q,\\ldots\\)\ub85c \ub098\ud0c0\ub0b4\uae30\ub3c4 \ud55c\ub2e4.'><sup>7<\/sup><\/a><\/span> \ubb3c\ub860 \uc704\uc758 \uc870\uac74\uc740 \uc790\uc5f0\uc218 \uc804\uccb4\uc758 \uc9d1\ud569 \\(\\mathbb{N}\\)\uc5d0\uc11c \uc815\uc758\ub418\uc5b4 \uc788\ub294 \uac83\uc774\ub2e4. \uc774\ub7ec\ud55c \ub9e5\ub77d\uc5d0\uc11c \uc9c4\ub9ac\uc9d1\ud569 \\(P\\)\ub97c<br \/>\n\\[<br \/>\nP=\\{ x\\in \\mathbb{N}\\mid p(x) \\}=\\{ x\\in \\mathbb{N}\\mid \\mbox{\\(x\\)\ub294 \\(6\\)\uc758 \uc57d\uc218}\\}<br \/>\n\\]<br \/>\n\ub77c\uace0 \uc4f8 \uc218 \uc788\ub2e4. \uc989 \uc9c4\ub9ac\uc9d1\ud569 \\(P\\)\ub294 \uc804\uccb4\uc9d1\ud569\uc778 \\(\\mathbb{N}\\)\uc758 \uc6d0\uc18c\ub4e4 \uac00\uc6b4\ub370 \\(6\\)\uc758 \uc57d\uc218\ub4e4\uc744 \ubaa8\uc544 \ub193\uc740 \uac83\uc774\ub2e4.\n<\/p>\n<div class=\"definition\">\n<p>\n\t\t<span class=\"definition\"> Remark <\/span><br \/>\n\uc9d1\ud569\uc744 \uc0dd\uac01\ud558\ub4e0 \uc870\uac74\uc744 \uc0dd\uac01\ud558\ub4e0, \ubcc4\ub2e4\ub978 \uc5b8\uae09\uc774 \uc5c6\ub354\ub77c\ub3c4, \uc5b8\uc81c\ub098 \uc801\ub2f9\ud55c \uc804\uccb4\uc9d1\ud569\uc774 \uc774\ubbf8 \uc8fc\uc5b4\uc838 \uc788\ub2e4\uace0 \uc0dd\uac01\ud55c\ub2e4. \uc774\ub7ec\ud55c \ub9e5\ub77d\uc5d0\uc11c &#8216;\uc804\uccb4\uc9d1\ud569&#8217;\uc744 &#8216;\ucd08\uae30\uc9d1\ud569&#8217;\uc73c\ub85c \ubd80\ub974\ub294 \uac83\uc774 \ub354 \uc801\uc808\ud558\ub2e4\uace0 \uc0dd\uac01\ud558\ub294 \uc0ac\ub78c\ub3c4 \uc788\ub2e4.\n<\/p>\n<\/div>\n<h3> \uc9d1\ud569\uc758 \ud3ec\ud568\uad00\uacc4<\/h3>\n<p>\ub450 \uc9d1\ud569 \\(A, B\\)\uac00 \uc788\uc744 \ub54c, \ubaa8\ub4e0 \\(x\\)\uc5d0 \ub300\ud558\uc5ec<br \/>\n\\[<br \/>\nx\\in A\\ \\longrightarrow\\ x\\in B<br \/>\n\\]<br \/>\n\uc640<br \/>\n\\[<br \/>\nx\\in B\\ \\longrightarrow\\ x\\in A<br \/>\n\\]<br \/>\n\uac00 \ucc38\uc77c \ub54c, \ub450 \uc9d1\ud569\uc774 \uac19\ub2e4\uace0 \ub9d0\ud558\uace0 \uc774\ub97c \\(A=B\\)\ub85c \ub098\ud0c0\ub0b8\ub2e4. \ub610\ud55c \ubaa8\ub4e0 \\(x\\)\uc5d0 \ub300\ud558\uc5ec<br \/>\n\\[<br \/>\nx\\in A\\ \\longrightarrow\\ x\\in B<br \/>\n\\]<br \/>\n\uac00 \ucc38\uc77c \ub54c, \\(A\\)\ub97c \\(B\\)\uc758 \ubd80\ubd84\uc9d1\ud569\uc774\ub77c\uace0 \ubd80\ub974\uace0 \uc774\ub97c \uae30\ud638\ub85c<br \/>\n\\[<br \/>\nA\\subset B\\quad\\mbox{\ud639\uc740}\\quad A\\subseteq B<br \/>\n\\]<br \/>\n\uc640 \uac19\uc774 \ub098\ud0c0\ub0b8\ub2e4. \ub9cc\uc77c \\(A\\neq B\\)\uc774\uace0 \\(A\\subset B\\)\uc774\uba74 \\(A\\)\ub97c \\(B\\)\uc758 <span class=\"defined\"> \uc9c4\ubd80\ubd84\uc9d1\ud569<\/span>\uc774\ub77c\uace0 \ubd80\ub978\ub2e4. \uc7ac\ubbf8\uc788\ub294 \uba85\uc81c\ub97c \ud558\ub098 \uc99d\uba85\ud574\ubcf4\uc790.\n<\/p>\n<div class=\"theorem\">\n<p>\n\t\t<span class=\"theorem\"> Proposition 1.1.3 <\/span><br \/>\n\uacf5\uc9d1\ud569\uc740 \ubaa8\ub4e0 \uc9d1\ud569\uc758 \ubd80\ubd84\uc9d1\ud569\uc774\ub2e4. \uc989 \\(A\\)\uac00 \uc784\uc758\uc758 \uc9d1\ud569\uc77c \ub54c,<br \/>\n\\[<br \/>\n\\varnothing\\subset A<br \/>\n\\]<br \/>\n\uac00 \uc131\ub9bd\ud55c\ub2e4.\n<\/p>\n<\/div>\n<p class=\"proofbegin\">\n\t<span class=\"proof\">Proof.<\/span><br \/>\n\ubaa8\ub4e0 \\(x\\)\uc5d0 \ub300\ud558\uc5ec<br \/>\n\\begin{equation}<br \/>\nx\\in \\varnothing\\ \\longrightarrow\\ x\\in A \\tag{1.1}<br \/>\n\\end{equation}<br \/>\n\uac00 \ucc38\uc784\uc744 \ubcf4\uc774\uba74 \ub41c\ub2e4. \uadf8\ub7f0\ub370 \uacf5\uc9d1\ud569\uc758 \uc815\uc758\uc5d0 \uc758\ud558\uc5ec \\(x\\in \\varnothing\\)\ub294 \uac70\uc9d3\uc774\ubbc0\ub85c (1.1)\uc740 \ucc38\uc774\ub2e4.<br \/>\n<span class=\"qed\"><\/span>\n<\/p>\n<p>\n\t\t<span class=\"definition\"> \uc720\uc81c 1.5 <\/span><br \/>\n\uc9d1\ud569 \\(S=\\{ a, b, c\\}\\)\uc758 \ubd80\ubd84\uc9d1\ud569\uc744 \ubaa8\ub450 \uad6c\ud558\uc5ec\ub77c.\n<\/p>\n<p class=\"proofbegin\">\n\t<span class=\"proof\">Sol.<\/span><br \/>\n\uac01\uac01\uc758 \uc6d0\uc18c\uac00 \uc18d\ud558\ub294 \uacbd\uc6b0\uc640 \uc18d\ud558\uc9c0 \uc54a\ub294 \uacbd\uc6b0\ub97c \uc0dd\uac01\ud558\uba74 \ubaa8\ub450 \\(2^{3}=8\\)\uac00\uc9c0\uc758 \uacbd\uc6b0\uac00 \ub098\uc628\ub2e4. \ub530\ub77c\uc11c \ubd80\ubd84\uc9d1\ud569\uc740 \\(8\\)\uac1c\uc774\uba70 \uc774\uac83\uc744 \ub098\uc5f4\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\ub2e4.<br \/>\n\\[<br \/>\n\\varnothing, \\{ a\\}, \\{b\\}, \\{c\\}, \\{a, b\\}, \\{a, c\\}, \\{b, c\\}, S<br \/>\n\\]<br \/>\n\ucc38\uace0\ub85c \uc774\ub4e4 \uc911 \\(S\\)\ub97c \uc81c\uc678\ud55c \ub2e4\ub978 \uac83\ub4e4\uc740 \\(S\\)\uc758 \uc9c4\ubd80\ubd84\uc9d1\ud569\uc774\ub2e4.<br \/>\n<span class=\"qed\"><\/span>\n<\/p>\n<p>\n\t\t<span class=\"definition\"> \uc720\uc81c 1.6 <\/span><br \/>\n\uc9d1\ud569 \\(\\{ x, \\{y, z\\}\\}\\)\uc758 \ubd80\ubd84\uc9d1\ud569\uc744 \ubaa8\ub450 \uad6c\ud558\uc5ec\ub77c.\n<\/p>\n<p>\n\t\t<span class=\"definition\"> \uc720\uc81c 1.7 <\/span><br \/>\n\uc9d1\ud569 \\(\\{a, b, c, d, e\\}\\)\uc758 \ubd80\ubd84\uc9d1\ud569 \uc911\uc5d0\uc11c \ub450 \uc6d0\uc18c \\(\\{a, b\\}\\)\ub97c \ubc18\ub4dc\uc2dc \uc6d0\uc18c\ub85c \uac16\ub294 \uc9d1\ud569\uc744 \ubaa8\ub450 \uad6c\ud558\uc5ec\ub77c.\n<\/p>\n<p>\n\t\t<span class=\"definition\"> \uc720\uc81c 1.8 <\/span><br \/>\n\ub450 \uc9d1\ud569 \\(A=\\{ a, 2\\}, B=\\{b, b^{2}\\}\\)\uc5d0 \ub300\ud558\uc5ec \\(A\\subset B\\)\uc774\uace0 \\(B\\subset A\\)\uac00 \ub418\ub3c4\ub85d \ud558\ub294 \uc815\uc218 \\(a, b\\)\uc758 \uac12\uc744 \uad6c\ud558\uc5ec\ub77c.\n<\/p>\n<p>\uc9d1\ud569 \\(A\\)\uac00 \uc8fc\uc5b4\uc84c\uc744 \ub54c, \\(A\\)\uc758 \ubd80\ubd84\uc9d1\ud569\ub4e4\uc744 \ubaa8\ub450 \ubaa8\uc544\ub193\uc740 \uc9d1\ud569\uc744 \\(A\\)\uc758 <span class=\"defined\"> \uba71\uc9d1\ud569<\/span>(power set)\uc774\ub77c\uace0 \ubd80\ub974\uace0 \uc774\ub97c \uae30\ud638\ub85c<br \/>\n\\[<br \/>\n\\wp(A)<br \/>\n\\]\uc774 \ub098\ud0c0\ub0b8\ub2e4.<\/p>\n<p> <span class=\"definition\"> \ubcf4\uae30 <\/span><br \/>\n\uc9d1\ud569 \\(A=\\{ 1, 2\\}\\) \uc5d0 \ub300\ud558\uc5ec \\(A\\)\uc758 \uba71\uc9d1\ud569 \\(\\wp(A)\\)\ub294<br \/>\n\\[<br \/>\n\\wp(A)=\\left\\{ \\varnothing, \\{1 \\}, \\{2 \\}, \\{1, 2\\} \\right\\}<br \/>\n\\]<br \/>\n\uc774\ub2e4.\n<\/p>\n<p>\n\t\t<span class=\"definition\"> \uc720\uc81c 1.9 <\/span><br \/>\n\uacf5\uc9d1\ud569 \\(\\varnothing\\)\uc5d0 \ub300\ud558\uc5ec \\(\\wp(\\wp(\\varnothing))\\)\uc744 \uad6c\ud558\uc5ec\ub77c.\n<\/p>\n<hr>\n","protected":false},"excerpt":{"rendered":"<p>\uc81c1\uc7a5 \uc9d1\ud569\uacfc \ub17c\ub9ac\uc758 \uae30\ucd08 &#8221;\ucca0\ud559\uc740 \uc6b0\uc8fc\ub77c\ub294 \ub4dc\ub113\uc740 \ucc45\uc5d0 \uc4f0\uc5ec\uc788\ub2e4. \u2026 \uadf8\uac83\uc740 \uc218\ud559\uc758 \uc5b8\uc5b4\ub85c \uc4f0\uc600\uc73c\uba70 \uadf8\uac83\uc758 \ubb38\uc790\ub294 \uc0bc\uac01\ud615, \ub3d9\uadf8\ub77c\ubbf8 \uadf8\ub9ac\uace0 \ub2e4\ub978 \uae30\ud558\ud559\uc801 \uc218\uce58\ub4e4\uc774\ub2e4.&#8221; -\uac08\ub9b4\ub808\uc624 \uac08\ub9b4\ub808\uc774(Galileo Galilei; 1564&#8211;1642)- 19\uc138\uae30 \ub9d0 \uc218\ud559\uc790 \uce78\ud1a0\ub974(Cantor, G.; 1845&#8211;1918)\ub294 \ubb34\ud55c\uc9d1\ud569\uc5d0 \uad00\ud55c \uc774\ub860\uc744 \ucc98\uc74c\uc73c\ub85c \ubc1c\ud45c\ud558\uc600\ub2e4. \uc218\ud559\uc758 \uae34 \uc5ed\uc0ac\ub97c \uc0dd\uac01\ud574\ubcfc \ub54c &#8216;\uc9d1\ud569&#8217;\uc774\ub77c\ub294 \uac1c\ub150\uc744 \uad6c\uccb4\uc801\uc73c\ub85c \ub2e4\ub8ec \uac83\uc740 \ube44\uad50\uc801 \ucd5c\uadfc\uc758 \uc77c\uc774\ub77c \ud560 \uc218 \uc788\ub2e4. \uc624\ub298\ub0a0\uc5d0\ub294 \ubaa8\ub4e0 \uc218\ud559\uc801 \ub300\uc0c1\uc744 \uc9d1\ud569\uc744 \uc774\uc6a9\ud558\uc5ec \uc815\uc758\ud55c\ub2e4\uace0 \ud574\ub3c4 \uacfc\uc5b8\uc774 \uc544\ub2c8\ub2e4. \uc989&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[54],"tags":[371,372,378,102,379],"class_list":["post-4333","post","type-post","status-publish","format-standard","hentry","category-basic-mathematics","tag-371","tag-372","tag-378","tag-102","tag-379"],"_links":{"self":[{"href":"https:\/\/sasamath.com\/blog\/wp-json\/wp\/v2\/posts\/4333","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sasamath.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sasamath.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sasamath.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sasamath.com\/blog\/wp-json\/wp\/v2\/comments?post=4333"}],"version-history":[{"count":8,"href":"https:\/\/sasamath.com\/blog\/wp-json\/wp\/v2\/posts\/4333\/revisions"}],"predecessor-version":[{"id":4359,"href":"https:\/\/sasamath.com\/blog\/wp-json\/wp\/v2\/posts\/4333\/revisions\/4359"}],"wp:attachment":[{"href":"https:\/\/sasamath.com\/blog\/wp-json\/wp\/v2\/media?parent=4333"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sasamath.com\/blog\/wp-json\/wp\/v2\/categories?post=4333"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sasamath.com\/blog\/wp-json\/wp\/v2\/tags?post=4333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}