{"id":3270,"date":"2012-11-06T08:01:00","date_gmt":"2012-11-05T23:01:00","guid":{"rendered":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/?p=3270"},"modified":"2021-09-01T20:25:24","modified_gmt":"2021-09-01T11:25:24","slug":"%eb%93%9c-%eb%aa%a8%eb%a5%b4%ea%b0%84-%ec%96%b4%ed%9d%a5","status":"publish","type":"post","link":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/2012\/11\/06\/%eb%93%9c-%eb%aa%a8%eb%a5%b4%ea%b0%84-%ec%96%b4%ed%9d%a5\/","title":{"rendered":"\ub4dc \ubaa8\ub974\uac04 \uc5b4\ud765"},"content":{"rendered":"<p> \ub4dc \ubaa8\ub974\uac04, \uc74c\uc218\uc758 \uc874\uc7ac\ub97c \uc758\uc2ec\ud558\ub2e4. <\/p>\n<ol class=\"org-ol\">\n<li>\uc624\uac70\uc2a4\ud2b8 \ub4dc \ubaa8\ub974\uac04(1806 ~ 1871)\n<ul class=\"org-ul\">\n<li>19\uc138\uae30 \uc601\uad6d\uc758 \uc218\ud559\uc790 \uadf8\ub9ac\uace0 \ub17c\ub9ac\ud559\uc790<\/li>\n<li>\ub17c\ub9ac\uc640 \uc9d1\ud569 \uc774\ub860\uc5d0\uc11c \uc624\ub298\ub0a0 \uc790\uc2e0\uc758 \ubc95\uce59\uc774\ub77c \ubd88\ub9ac\ub294 \uc6d0\ub9ac\ub97c \uc790\uc138\ud788 \uc124\uba85\ud568<\/li>\n<li>\uc218\ud559\uc801 \uadc0\ub0a9\ubc95(mathematical induction)\uc758 \ud604\ub300\uc801 \uc4f0\uc784\uc5d0 \uacf5\ud5cc<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p> \ucc38\uace0\ubb38\ud5cc <\/p>\n<ul class=\"org-ul\">\n<li>Augustus De Morgan, <a href=\"http:\/\/en.wikipedia.org\/wiki\/Augustus_De_Morgan\">http:\/\/en.wikipedia.org\/wiki\/Augustus_De_Morgan<\/a><\/li>\n<li>Mathematical Induction, <a href=\"http:\/\/en.wikipedia.org\/wiki\/Mathematical_induction#History\">http:\/\/en.wikipedia.org\/wiki\/Mathematical_induction#History<\/a><\/li>\n<\/ul>\n<ol class=\"org-ol\">\n<li>\uc2dc\ub300\uc801 \ubc30\uacbd\n<ul class=\"org-ul\">\n<li>\uacbd\ud5d8\ub860\uc758 \uc804\ud1b5: \uacbd\ud5d8\ub860\uc740 18\uc138\uae30\uc5d0 \ub098\ud0c0\ub09c \uc601\uad6d\uc758 \uc0ac\uc0c1\uc774\ub2e4. \uc778\uac04\uc758 \uc774\uc131\uc744 \uc911\uc2dc\ud558\ub294 \uacc4\ubabd\uc0ac\uc0c1\uc5d0 \uae30\ucd08\ud558\uace0 \uacbd\ud5d8\uc801(empirical) \uc9c0\uc2dd\uc744 \uc911\uc2dc\ud55c\ub2e4. \uc774\ub294 \uc120\ud5d8\uc801(a priori) \uc9c0\uc2dd \ub610\ud55c \uc778\uc815\ud558\ub294 \ub300\ub959\uc758 \ud569\ub9ac\ub860\uacfc \ube44\uad50\ub41c\ub2e4.<\/li>\n<li>\uacf5\ub9ac\uc8fc\uc758\uc758 \ud604\uc2e4: 19\uc138\uae30 \uc601\uad6d\uc5d0\uc11c\ubd80\ud130 \ubc1c\uc804\ud55c \ucca0\ud559 \uc0ac\uc0c1\uc73c\ub85c \uc2e0\uc758 \uba85\ub839\uc744 \ub530\ub974\uace0 \uc695\uad6c\ub97c \uc5b5\uc81c\ud558\ub294 \uac83\uc774 \uc120\uc774 \uc544\ub2c8\ub77c \ucd5c\ub300\ud55c \ub9ce\uc740 \uc0ac\ub78c\ub4e4\uc5d0\uac8c (\ud604\uc2e4\uc5d0\uc11c \uacbd\ud5d8\ud560 \uc218 \uc788\ub294) \uc774\uc775(\ucf8c\ub77d)\uc744 \uc8fc\ub294 \uac83\uc774 \uc633\uc740 \ud589\ub3d9\uc774\ub77c\uace0 \uc8fc\uc7a5\ud55c\ub2e4.<\/li>\n<li>\uc601\uad6d\ud559\uc790\uc758 \uc131\uaca9: \uc601\uad6d\uc758 \ub9ce\uc740 \ud559\uc790\ub4e4\uc740 \uc21c\uc218\ud558\uac8c \uc774\ub860\ub9cc\uc744 \ucd94\uad6c\ud558\uc9c0 \uc54a\uace0 \uc815\uce58\uac00, \uc0ac\ud68c \uac1c\ud601\uac00, \uadf8\ub9ac\uace0 \uc0ac\uc5c5\uac00 \ub4f1\uc758 \ud604\uc2e4\uc801 \uc9c1\uc5c5 \ub610\ud55c \uac00\uc9c0\uace0 \uc788\uc5c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p> \ucc38\uace0\ubb38\ud5cc <\/p>\n<ul class=\"org-ul\">\n<li>\ucca0\ud559, \uc5ed\uc0ac\ub97c \ub9cc\ub098\ub2e4, \uc548\uad11\ubcf5<\/li>\n<\/ul>\n<ol class=\"org-ol\">\n<li>\uc74c\uc218\uc5d0 \ub300\ud55c \ub4dc \ubaa8\ub974\uac04\uc758 \uc124\uba85<\/li>\n<\/ol>\n<p> \uc5b4\ub5a4 \ubc29\uc815\uc2dd\uc758 \ub2f5\uc73c\ub85c \uc74c\uc218\uac00 \ub098\uc628\ub2e4\uba74, \uc774\ub294 \uc774\uc5d0 \ub300\uc751\ud558\ub294 \ud604\uc2e4 \ubb38\uc81c(story problem) \ud639\uc740 \uc785\ubc29(formulation of equation)\ud558\ub294 \uacfc\uc815 \uc548\uc5d0 \ubd88\ud569\ub9ac\uc131(absurdity)\uc774 \uc874\uc7ac\ud588\uc5c8\uae30 \ub54c\ubb38\uc774\ub2e4. <\/p>\n<p> \uc608\ub97c \ub4e4\uc5b4 \ub2e4\uc74c\uacfc \uac19\uc740 \ud604\uc2e4 \ubb38\uc81c\ub97c \uc0dd\uac01\ud574 \ubcf4\uc790. <\/p>\n<p> &#8220;\uc544\ubc84\uc9c0\uc758 \ub098\uc774\ub294 56, \uc544\ub4e4\uc740 29\uc774\ub2e4. \uc5b8\uc81c \uc544\ubc84\uc9c0\uc758 \ub098\uc774\ub294 \uc544\ub4e4\uc758 \ub450\ubc30\uac00 \ub418\ub294\uac00?&#8221; <\/p>\n<p> \uc774 \ubb38\uc81c\ub294 2*(29 + x) = 56 + x\ub85c \uc218\uc2dd\ud654\ub418\uba70 x = -2\ub780 \ub2f5\uc744 \uac16\ub294\ub2e4. \ub530\ub77c\uc11c \ud639\uc790\ub294 \uc774\uac83\uc774 \uc74c\uc218\uc758 \uc874\uc7ac\ub97c \ubcf4\uc5ec\uc900\ub2e4\uace0 \ub9d0\ud558\uace0 \uc2f6\uc5b4\ud560\uc9c0\ub3c4 \ubaa8\ub974\uaca0\ub2e4. \ud558\uc9c0\ub9cc -2\ub294 \uc2dc\uc791\ud560 \ub54c\ubd80\ud130 \ubb38\uc81c\uac00 \uc774\uce58\uc5d0 \ud569\ud558\uc9c0 \ubabb\ud588\uae30 \ub54c\ubb38\uc5d0 \ubc1c\uc0dd\ud55c \uac83\uc774\ub2e4. \ub9cc\uc57d \uc774 \ubd88\ud569\ub9ac\uc131\uc774 \uc81c\uac70\ub41c\ub2e4\uba74 \uc6b0\ub9ac\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ub9cc\uc871\uc2a4\ub7ec\uc6b4 \uacb0\uacfc\ub97c \uc5bb\uc744 \uac83\uc774\ub2e4. <\/p>\n<p> *\ubb38\uc81c: \uc544\ubc84\uc9c0\uc758 \ub098\uc774\ub294 56, \uc544\ub4e4\uc740 29\uc774\ub2e4. \uacfc\uac70\uc758 \uc5b8\uc81c \uc544\ubc84\uc9c0\uc758 \ub098\uc774\ub294 \uc544\ub4e4\uc758 \ub450\ubc30\uc600\uc5c8\ub098? *\ubc29\uc815\uc2dd: 2(29 &#8211; x) = 56 &#8211; x *\ub2f5: x = 2 <\/p>\n<p> \uadf8\ub7ec\ubbc0\ub85c \uc74c\uc218\ub294 \uc591\uc218\ub97c \uc798\ubabb \ubc14\ub77c\ubd24\uc744 \ub54c \ub098\ud0c0\ub098\ub294 \uac83\uc77c \ubfd0 \ud604\uc2e4\uc5d0\uc11c \ub3c5\ub9bd\uc801\uc73c\ub85c \uc874\uc7ac\ud558\ub294 \uc218\uac00 \uc544\ub2c8\ub2e4. <\/p>\n<p> \ucc38\uace0\ubb38\ud5cc <\/p>\n<ul class=\"org-ul\">\n<li>Augustus De Moran and the Absurdity of Negative Numbers, <a href=\"http:\/\/www.math.rochester.edu\/people\/faculty\/rarm\/demorgan.html\">http:\/\/www.math.rochester.edu\/people\/faculty\/rarm\/demorgan.html<\/a><\/li>\n<\/ul>\n<ol class=\"org-ol\">\n<li>\ubb38\uc81c \uc81c\uae30<\/li>\n<\/ol>\n<p> \ub4dc \ubaa8\ub974\uac04\uc740 \uc65c \uc774\uc640 \uac19\uc740 \uc124\uba85\uc73c\ub85c \uc74c\uc218\uc758 \uc874\uc7ac\ub97c \ubd80\uc815\ud588\uc744 \uae4c? <\/p>\n<ol class=\"org-ol\">\n<li>\uc758\uacac<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\ub4dc \ubaa8\ub974\uac04, \uc74c\uc218\uc758 \uc874\uc7ac\ub97c \uc758\uc2ec\ud558\ub2e4. \uc624\uac70\uc2a4\ud2b8 \ub4dc \ubaa8\ub974\uac04(1806 ~ 1871) 19\uc138\uae30 \uc601\uad6d\uc758 \uc218\ud559\uc790 \uadf8\ub9ac\uace0 \ub17c\ub9ac\ud559\uc790 \ub17c\ub9ac\uc640 \uc9d1\ud569 \uc774\ub860\uc5d0\uc11c \uc624\ub298\ub0a0 \uc790\uc2e0\uc758 \ubc95\uce59\uc774\ub77c \ubd88\ub9ac\ub294 \uc6d0\ub9ac\ub97c \uc790\uc138\ud788 \uc124\uba85\ud568 \uc218\ud559\uc801 \uadc0\ub0a9\ubc95(mathematical induction)\uc758 \ud604\ub300\uc801 \uc4f0\uc784\uc5d0 \uacf5\ud5cc \ucc38\uace0\ubb38\ud5cc Augustus De Morgan, http:\/\/en.wikipedia.org\/wiki\/Augustus_De_Morgan Mathematical Induction, http:\/\/en.wikipedia.org\/wiki\/Mathematical_induction#History \uc2dc\ub300\uc801 \ubc30\uacbd \uacbd\ud5d8\ub860\uc758 \uc804\ud1b5: \uacbd\ud5d8\ub860\uc740 18\uc138\uae30\uc5d0 \ub098\ud0c0\ub09c \uc601\uad6d\uc758 \uc0ac\uc0c1\uc774\ub2e4. \uc778\uac04\uc758 \uc774\uc131\uc744 \uc911\uc2dc\ud558\ub294 \uacc4\ubabd\uc0ac\uc0c1\uc5d0 \uae30\ucd08\ud558\uace0 \uacbd\ud5d8\uc801(empirical) \uc9c0\uc2dd\uc744 &#8230; <a title=\"\ub4dc \ubaa8\ub974\uac04 \uc5b4\ud765\" class=\"read-more\" href=\"https:\/\/mathematicians.korea.ac.kr\/ywkim\/2012\/11\/06\/%eb%93%9c-%eb%aa%a8%eb%a5%b4%ea%b0%84-%ec%96%b4%ed%9d%a5\/\" aria-label=\"\ub4dc \ubaa8\ub974\uac04 \uc5b4\ud765\uc5d0 \ub300\ud574 \ub354 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694\">\ub354 \uc77d\uae30<\/a><\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[11],"tags":[],"class_list":["post-3270","post","type-post","status-publish","format-standard","hentry","category-lectures"],"distributor_meta":false,"distributor_terms":false,"distributor_media":false,"distributor_original_site_name":"\uae40\uc601\uc6b1","distributor_original_site_url":"https:\/\/mathematicians.korea.ac.kr\/ywkim","push-errors":false,"_links":{"self":[{"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/posts\/3270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/comments?post=3270"}],"version-history":[{"count":1,"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/posts\/3270\/revisions"}],"predecessor-version":[{"id":3271,"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/posts\/3270\/revisions\/3271"}],"wp:attachment":[{"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/media?parent=3270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/categories?post=3270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/tags?post=3270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}