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Logical assertion

The 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 antedecent.

For example, if p = "x is even", the implication

(\vdash p)\rightarrow(p \pmod 2 \equiv 0)

is thus true. We can also write this using the logical assertion symbol, as

\vdash \left( (\vdash p)\rightarrow(p \pmod 2 \equiv 0) \right)
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10-26-2009 08:16:03
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