抽象のはしごの上手なのぼり方

by Hiromi Hishida

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)JSPNJ)JTIJEB !XFC 1)1$POGFSFODF+BQBO SE0DU ந৅ͷ͸͠͝ͷ্खͳͷ΅Γํ d࢖͍΍͍͢൚༻ϥΠϒϥϦΛ࡞ΔͨΊʹd

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͜ͷηογϣϯͷର৅ w ෳ਺ͷϓϩδΣΫτͰಉ͡Α͏ͳ࣮૷Λίϐϖͯ͠͠·͏ͷ͕೰Έͷਓ w ΦϒδΣΫτࢦ޲Ͱॻ͍ͯςετ΋ॻ͍ͯΔͷʹɺվम͢Δͨͼʹվमൣғ͕ ޿͘ͳΔਓ w ΦʔϓϯιʔεͷϥΠϒϥϦ࡞ऀʹͳΓ͍ͨਓ w ΧϯϑΝϨϯεͰొஃ͍ͨ͠ਓ

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ந৅ ۩৅ɾ۩ମ

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ந৅ ۩৅ɾ۩ମ ͱ͸ʁ

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NF 1)1FS ΤϯδχΞ ঁੑ ϗϞɾαϐΤϯε ໊ݹ԰ࢢຽ ฼਌ Χϧςοτࣾһ Χϧςοτ։ൃ෦һ ೔ຊਓ

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1)1ΧϯϑΝϨϯεࢀՃऀ 1)1FS ϗϞɾαϐΤϯε

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ந৅ͱ͸ʢ·ͱΊʣ w ରٛޠɿ۩৅ɾ۩ମ w ҙຯɿଟ͘ͷ෺΍ࣄฑ΍۩ମతͳ֓೦͔ΒɺͦΕΒͷൣғͷશ෦ʹڞ௨ͳଐ ੑΛൈ͖ग़͠ɺ͜ΕΛҰൠతͳ֓೦ͱͯ͠ͱΒ͑Δ͜ͱɻ w ࢀߟࢿྉIUUQTTQFBLFSEFDLDPNIJEFOPSJHPUPDIPVYJBOHIVB UVUFIFXIBUJTBCTUSBDUJPOBGFCG DCDD TMJEF CZ!IJEFOPSJHPUP1)1FS,BJHJ

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ࣄྫ w 4/4αΠτͰϢʔβʔͷߦಈͷϩάΛऔΓ͍ͨ w Ϣʔβʔ*% Ϣʔβʔ໊˓˓͕ϩάΠϯ w Ϣʔβʔ*% Ϣʔβʔ໊˓˓͕೔هΛߋ৽ w ʜ

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࣮૷ྫϩάΛग़͍ͨ͠ૢ࡞͝ͱʹϩάΫϥεʢϝιουʣΛ࡞Δ

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࣮૷ྫϩάΛग़͍ͨ͠ૢ࡞͝ͱʹϩάΫϥεʢϝιουʣΛ࡞Δ

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࣮૷ྫϩάΛग़͍ͨ͠ૢ࡞͝ͱʹϩάΫϥεʢϝιουʣΛ࡞Δ w ϝϦοτ w ݺͼग़࣌͠ͷ࣮૷͕࠷খݶ w σϝϦοτ w ର৅γεςϜɾର৅ͷ৔໘͕ಛԽ͗ͯ͢͠࠶ར༻Ͱ͖ͳ͍

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࣮૷ྫ143-PHHFS*OUFSGBDFΛ௚઀࢖͏

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࣮૷ྫ143-PHHFS*OUFSGBDFΛ௚઀࢖͏

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࣮૷ྫ143-PHHFS*OUFSGBDFΛ௚઀࢖͏ w ϝϦοτ w ࠶ར༻ੑ͸࠷ߴʢ͔ͩΒΦʔϓϯιʔεʹͳͬͯΔΘ͚ͩ͠ʣ w σϝϦοτ w ݺͼग़͠ଆͰͨ͘͞Μ࣮૷͠ͳ͍ͱ͍͚ͳ͍

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Φʔϓϯιʔε 1TSa-PHHFS ಛఆγεςϜ಺ "QQa6TFS-PHJO-PHHFS

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Φʔϓϯιʔε 1TSa-PHHFS ಛఆγεςϜ಺ "QQa6TFS-PHJO-PHHFS ҧ͍͸ʁ

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ந ࢹ఺ͷߴ͕͞ҧ͏ ࢹ໺ͷ޿͕͞ҧ͏ ۩

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࣮૷ྫࣗ෼ͨͪ༻ͷ൚༻ϩΨʔϥΠϒϥϦ 6TFS"DUJPO-PHHFS

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࣮૷ྫࣗ෼ͨͪ༻ͷ൚༻ϩΨʔϥΠϒϥϦ -PHJO"DUJPO

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࣮૷ྫࣗ෼ͨͪ༻ͷ൚༻ϩΨʔϥΠϒϥϦ 6TFS"DUJPO-PHHFSͷݺͼग़͠

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࣮૷ྫࣗ෼ͨͪ༻ͷ൚༻ϩΨʔϥΠϒϥϦ w ϝϦοτ w ݺͼग़࣌͠ͷܭࢉ͕ଟ͗͢ͳ͍ w 6TFSͱ͍͏֓೦Λڞ༗͍ͯ͠ΔϓϩδΣΫτͳΒ࠶ར༻Մ w σϝϦοτ w 6TFSͱ͍͏֓೦ͷͳ͍ϓϩδΣΫτͰ͸࠶ར༻Ͱ͖ͳ͍

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ࣄྫʢ࠶ʣ w 4/4αΠτͰϢʔβʔͷߦಈͷϩάΛऔΓ͍ͨ w Ϣʔβʔ*% Ϣʔβʔ໊˓˓͕ϩάΠϯ w Ϣʔβʔ*% Ϣʔβʔ໊˓˓͕೔هΛߋ৽ w ʜ

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ൺֱ w ࣮૷ྫʮϢʔβʔͷϩάΠϯʯʹର͢ΔϩάΛऔΔ w ࣮૷ྫʮͳʹ͔ͷจࣈྻʯΛϩάͱͯ͠อଘ͢Δ w ࣮૷ྫʮϩάΛऔΔ΂͖Ϣʔβʔͷߦಈʯʹର͢ΔϩάΛऔΔ w ϩάΠϯɾ೔هߋ৽ɾ೔هʹίϝϯτʜͱ͍͏ଟ਺ͷϢʔβʔߦಈΛʮϩά ΛऔΔ΂͖ߦಈʯͱ͍͏؍఺Ͱந৅Խ͍ͯ͠Δ w ʮͳʹ͔ͷจࣈྻʯ·Ͱͷந৅Խ͸ͯ͠ͳ͍

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ந ۩

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۩৅ ࠓճͷγεςϜ 6TFSͱ͍͏֓೦͕ ڞ௨͢ΔผγεςϜ 6TFSͱ͍͏֓೦͕ ڞ௨͠ͳ͍ผγεςϜ

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࣍ͷγεςϜΛࢹ໺ʹ͍ΕΔͨΊʹ͸ɺ͸͠͝ΛͲ͜·ͰొΔ͔ʁ w ྫ͑͹ʜ

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࣍ͷγεςϜΛࢹ໺ʹ͍ΕΔͨΊʹ͸ɺ͸͠͝ΛͲ͜·ͰొΔ͔ʁ w ྫ͑͹ʜ w ʮ࣍ͷγεςϜ͕ࠓ࢖ͬͯΔͷͱಉ͡όʔδϣϯͷϑϨʔϜϫʔΫ͡Όͳ͍ʯ͸े෼͋Δ w ʮ࣍ͷγεςϜ͕4ZNGPOZ͡Όͳ͍ʯʮ࣍ͷγεςϜ͕-BSBWFM͡Όͳ͍ʯ΋े෼͋Δͱࢥͬͨ΄͏͕ྑ͍ w ϲ݄ޙʹ͸શ͘৽͍͠αΠίʔʹΠέͯͯ௒ྲྀߦͬͯΔϑϨʔϜϫʔΫ͕ग़ͯΔ͔΋͠Εͳ͍ʂ w ϑϨʔϜϫʔΫʹґଘ͠ͳ͍Α͏ʹϥΠϒϥϦಠࣗͷʮϢʔβʔʯ֓೦Λ࡞͓ͬͯ͘ͱྑ͍ʢJOUFSGBDF %*1ʣ w ʮ࣍ͷγεςϜʹϢʔβʔ֓೦͕ͳ͍ʯ͸ࢹ໺ʹೖΕͳ͍͍ͯ͘ w ͦ΋ͦ΋΍Γ͍ͨ͜ͱ͕ҧ͏ w ʮ࣍ͷγεςϜ͕1)1͡Όͳ͍ʯ΋ࢹ໺ʹೖΕͳ͍͍ͯ͘ w Ϣʔβʔϩάઐ༻ͷ"1*αʔϏεΛ։ൃͯ͠࠾ࢉ͕औΕΔݟࠐΈ͕ͳ͍ͳΒͦ͜·Ͱ΍Δඞཁ͸ͳ͍ w ͋ͳ͕ͨ"84ͷΤϯδχΞͳΒผͰ͢G??

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ͳͥ͸͠͝ʁ

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ࠓͦ͜ʹ͋Δ࿅श༻͸͠͝ νʔϜ಺ ٕज़ϒϩάɾొஃ ਌͍͠༑ୡɾՈ଒ ʮ-JTLFUʹ(PPHMF0"VUIೝূΛ࣮૷͢Δͱ͖͸ ˓˓ʹۤ࿑ͨ͠Αʜʯ ʮ4ZNGPOZΞϓϦέʔγϣϯʹ0"VUIϩάΠϯΛ ࣮૷͢Δํ๏ʯ ʮʲ(PPHMFͰϩάΠϯʳͬͯΑ͋͘Δ͡ΌΜʁ ࠓ޿ࠂ୅ཧళͷ։ൃ෦Ͱ͍͋͋͏ײ͡ͷ΍ͭ࡞ͬͯͯ͞ʯ

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ࠓͦ͜ʹ͋Δ࿅श༻͸͠͝ νʔϜ಺ ٕज़ϒϩάɾొஃ ਌͍͠༑ୡɾՈ଒ ʮ΄͛΄͛γεςϜʹ(PPHMF0"VUIϩάΠϯΛ Ϋʔϧʹ࣮૷ͨͥ͠ʯ ʮ4ZNGPOZΞϓϦέʔγϣϯʹ0"VUIϩάΠϯΛ ࣮૷͢Δํ๏ʯ ʮʲ(PPHMFͰϩάΠϯʳͬͯΑ͋͘Δ͡ΌΜʁ ࠓ޿ࠂ୅ཧళͷ։ൃ෦Ͱ͍͋͋͏ײ͡ͷ΍ͭ࡞ͬͯͯ͞ʯ ϑΟʔυόοΫେࣄʂ

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͜ͷηογϣϯͷର৅ʢ࠶ʣ w ෳ਺ͷϓϩδΣΫτͰಉ͡Α͏ͳ࣮૷Λίϐϖͯ͠͠·͏ͷ͕೰Έͷਓ w ˠ΋͏গ͠ந৅౓Λ্͛ͯίϐϖͰͳ͘ϥΠϒϥϦԽͯ͠Έ·͠ΐ͏ w ΦϒδΣΫτࢦ޲Ͱॻ͍ͯςετ΋ॻ͍ͯΔͷʹɺվम͢Δͨͼʹվमൣғ͕޿͘ͳΔਓ w ˠࣗ࡞Ϋϥεͷந৅౓͕ߴ͗͢ΔՄೳੑ͕͋Γ·͢ɻͪΐͬͱந৅౓ΛԼ͛ͯΈ·͠ΐ͏ w ΦʔϓϯιʔεͷϥΠϒϥϦ࡞ऀʹͳΓ͍ͨਓ w ˠந৅౓Λࣗࣾͷࢹ໺ͷൣғ͔ΒҰஈ֊্͛·͠ΐ͏ w ΧϯϑΝϨϯεͰొஃ͍ͨ͠ਓ w ˠ໨ͷલͷ࣮૷ͷந৅౓Λۃݶ·Ͱ্͛Δࢥߟ࣮ݧΛ೔ʑ΍Γ·͠ΐ͏

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8FBSFIJSJOH ʙεϙϯαʔπΞʔʢΧϧςοτίϛϡ χέʔγϣϯζʣʹ΋དྷͯͶʂ