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Logical assertion
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Logical assertion : ウィキペディア英語版
Logical assertion
In mathematical logic, logical assertion is a statement that asserts that a certain premise is true, and is useful for statements in proof. It is equivalent to a sequent with an empty antecedent.
For example, if ''p'' = "''x'' is even", the implication
: (\vdash p)\rightarrow(x \pmod 2 \equiv 0)
is thus true. We can also write this using the logical assertion symbol, as
: \vdash \left( (\vdash p)\rightarrow(x \pmod 2 \equiv 0) \right)
In computer programming and programming language semantics, these are used in the form of assertions; one example is a loop invariant.



抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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