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・ Cutcombe
・ Cut Nyak Meutia
・ Cut of beef
・ Cut of Ice
・ Cut off period
・ Cut off saw
・ Cut Off Time
・ Cut Off Your Hands
・ Cut Off, Louisiana
・ Cut Out + Keep
・ Cut Out and Keep (album)
・ Cut Out Shapes
・ Cut Out Shapes (band)
・ Cut River
・ Cut River Bridge
Cut rule
・ Cut shot
・ Cut Snake
・ Cut Some Rug/Castle Rock
・ Cut Spelling
・ Cut square (philately)
・ Cut steel jewellery
・ Cut Tari
・ Cut the Cake
・ Cut the Cake (album)
・ Cut the Cake (horse)
・ Cut the Cord
・ Cut the Crap
・ Cut the Crap (Jackyl album)
・ Cut the Kid


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Cut rule : ウィキペディア英語版
Cut rule
In mathematical logic, the cut rule is an inference rule of sequent calculus. It is a generalisation of the classical modus ponens inference rule. Its meaning is that, if a formula ''A'' appears as a conclusion in one proof and an hypothesis in another, then another proof in which the formula ''A'' does not appear can be deduced. In the particular case of the modus ponens, for example occurrences of ''man'' are eliminated of ''Every man is mortal, Socrates is a man'' to deduce ''Socrates is mortal''.
== Formal notation ==
Formal notation in sequent calculus notation :
;cut:
:
\cfrac

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Cut rule」の詳細全文を読む



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