BOLT
发表于 2025-3-30 10:34:55
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Vertical
发表于 2025-3-30 15:18:20
Book 20081st editioneved by applying the theory of institutions that provides a precise mathematical formulation for the intuitive concept of a logical system. Especially in computer science, where the development of a huge number of specification logics is observable, institution-independent model theory simplifies an
PANT
发表于 2025-3-30 17:07:43
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人类的发源
发表于 2025-3-30 21:34:10
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OGLE
发表于 2025-3-31 01:16:01
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推迟
发表于 2025-3-31 07:47:17
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花费
发表于 2025-3-31 10:18:35
Categories,the textbooks on category theory available in the literature. and are among standard references for category theory. A reference for indexed categories discussing many examples from the model theory of algebraic specification is , while contains a rather compact presentation of fibred category theory.
Prostaglandins
发表于 2025-3-31 15:38:58
Preservation and Axiomatizability,ample is the Birkhoff Variety theorem of equational logic: a class of algebras for a signature is closed under products, sub-algebras, and homomorphic images if and only if it is the class of algebras of an equational theory.
DEMN
发表于 2025-3-31 20:29:05
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