#1
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µÃáÈÒʵÃì
(TMC-1) ¡Ó˹´àÍ¡À¾ÊÑÁ¾Ñ·¸ìà»ç¹à«µ¢Í§¨Ó¹Ç¹àµçÁ
¨§ËÒÇèÒáµèÅлÃо¨¹ìµèÍ仹Õé ÁÕ¡Õè»Ãо¨¹ì·ÕèÁÕ¤èÒ¤ÇÒÁ¨ÃÔ§à»ç¹¨ÃÔ§ $\forall y \exists x [y^2=x]$ $ \exists y \forall x [y^2=x]$ $\forall x \exists y [y^2=x]$ $\exists x \forall y [y^2=x]$ $\exists x \exists y [y^2=x]$ |
#2
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$\forall y \exists x [y^2=x]$ True
$ \exists y \forall x [y^2=x]$ False $\forall x \exists y [y^2=x]$ False $\exists x \forall y [y^2=x]$ False $\exists x \exists y [y^2=x]$ True |
#3
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»ÃÐ⤷ÕèÁÕÊÕá´§ 2 »ÃÐ⤠ÁѹµèÒ§¡Ñ¹ËÃͤÃѺ ¶éÒµèÒ§ µèÒ§ÂÑ§ä§ ¢Íº¤Ø³¤ÃѺ
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#4
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ÍéÒ§ÍÔ§:
$\forall y\exists x$ ¨Ðà»ç¹¨ÃÔ§àÁ×èÍ y ·Ø¡µÑÇ ·Õè·ÓãËéàÁ×èÍá·¹¤èÒ x ÍÂèÒ§¹éÍ 1 µÑÇŧä»áÅéÇä´é ·Õèä´éµÒÁà§×èÍ¹ä¢ àªè¹ $\forall y\exists x [y = x]$ ¨ÐàËç¹ÇèÒäÁèÇèÒàÅ×Í¡ y µÑÇä˹¡çµÒÁ ¡ç¨ÐËÒ x ä´éµÑǹ֧àÊÁÍ $\exists x\forall y$ ¨Ðà»ç¹¨ÃÔ§àÁ×èÍÁÕ x ÍÂèÒ§¹éÍ 1 µÑÇ·Õè·ÓãËéàÁ×èÍá·¹ y ·Ø¡µÑÇŧä»áÅéÇä´éµÒÁà§×èÍ¹ä¢ àªè¹ $\exists x\forall y [ x+y = y]$ ¨ÐàËç¹ÇèÒ¶éÒ x = 0 äÁèÇèÒá·¹ y µÑÇã´Å§ä» ¡ç¨Ðä´éµÒÁà§×èÍ¹ä¢ |
#5
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¢Íº¤Ø³¤ÃѺ
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á¢è§¤³ÔµÏ ¤Ô´ä´é §èÒ´ÒÂàËÅ×Í á¢è§·Ø¡àÁ×èÍ Ãé͹áç á¨é§»ÃШѡÉì ÃѺÃÒ§ÇÑÅ ËÅÒ¡ËÅÒ ÁÒ¡ÁÒ¹ѡ áµèá¢è§ÃÑ¡ ÂÒ¡á·é á¾éã¨à¸Í |
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