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Results tagged with lo.logic
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user 38447
first-order and higher-order logic, model theory, set theory, proof theory, computability theory, formal languages, definability, interplay of syntax and semantics, constructive logic, intuitionism, philosophical logic, modal logic, completeness, Gödel incompleteness, decidability, undecidability, theories of truth, truth revision, consistency.
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Bodnarchuk, Kaluzhnin, Kotov, Romov’s Theorem on inclusion of Polymorphism ($Pol \rho \subse...
Bodnarchuk, Kaluzhnin, Kotov, Romov’s paper [1] is well-known. Anne Fearnley [2] infered from it the following theroem and used it to prove the inclusion of polymorphisms.
Theorem (Bodnarchuk, Kaluz …
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How to prove that a binary relation is a strongly rigid relation? i.e. Polρ only contains pr...
I first quote a definition from Clone theory in Universal Algebra: A binary relation $\rho$ on a set U is strongly rigid if every universal algebra on U such that $\rho$ is a subuniverse of its square …
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