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Results tagged with model-theory
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user 22247
Model theory is the branch of mathematical logic which deals with the connection between a formal language and its interpretations, or models.
4
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0
answers
95
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local character of Tarski-Vaught for tuples in excellent classes
In the book Baldwin, Categoricity in Abstract Elementary Classes defines (Def.20.1,p.151) a notion of Tarski-Vaught extensions for tuples that generalises both independence and usual Tarski-Vaught ext …
- 468
4
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answers
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axiomatizing the abelian part of the topological fundamental groupoid functor on algebraic v...
let Vv be the category of complex algebraic varieties defined over $\bar Q\subset C$,
and let
$\pi_1^{top}:Vv\longrightarrow Groupoids$ sending a variety V into its (strict) fundamental
groupoid
$s,t …
- 468
3
votes
Elementary Equivalence =? Homotopy Equivalence
The dream behind this question is that perhaps one could think of an elementary substructure as a homotopical retract of the ambient structure
I have tried and failed to do something similar for mode …
- 468