Abstract: In this paper, we present a prenex form theorem for a version of Independence Friendly logic, a logic with imperfect information. Lifting classical results to such logics turns out not to be ...

This is a preview. Log in through your library . Abstract We consider valued fields with a distinguished isometry or contractive derivation as valued modules over the Ore ring of difference operators.

Abstract: It can be argued that only the equational theories of some sub-elementary function algebras are finitistic or intuitive according to a certain interpretation of Hilbert's conception of ...

The Journal of Symbolic Logic (JSL) was founded in 1936 and it has become the leading research journal in the field. It is issued quarterly. Volume 71, being published during 2006, will consist of ...

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ABSTRACT: Adopting a different method from the previous scholars, this article deduces the remaining 23 valid syllogisms just taking the syllogism AEE-4 as the basic axiom. The basic idea of this ...

存在量词 ``∃`` （ ``\ex`` ）用于表示短语“存在” 。Lean 中的形式表达式 ``∃ x : ℝ, 2 < x ∧ x < 3`` 是说存在一个介于2到3之间的实数。（我们将在 :numref:`conjunction_and_biimplication` 探讨合取符号 ...