Question

Showing that the class of finitely chromatic graphs is not closed under elementary equivalence without ultraproducts

score 166 · Answer 1 · 2018-04-19 21:17:16

166

Views

Showing that the class of finitely chromatic graphs is not closed under elementary equivalence without ultraproducts

Published on 19 Apr 2018 - 21:17

score 623 · Answer 2 · 2018-04-25 13:57:59

623

Views

Elementary proof of "irreducible polynomials remain irreducible over transcendental extension"?

Published on 25 Apr 2018 - 13:57

score 962 · Answer 3 · 2018-04-26 20:05:30

962

Views

Number of non-isomorphic models of the structure

Published on 26 Apr 2018 - 20:05

score 506 · Answer 4 · 2026-03-17 08:20:35

506

Views

Non-standard integers?

Published on 17 Mar 2026 - 8:20

score 130 · Answer 5 · 2026-03-20 08:57:58

130

Views

For an infinite group $G$, is the collection of all transitive $G$-sets first order elementary?

Published on 20 Mar 2026 - 8:57

score 52 · Answer 6 · 2018-04-29 14:51:43

If $M,N$ are structures of some first order language , $N$ is finite and $h: N \to M$ is an elementary embedding, then is $h$ an isomorphism?

score 408 · Answer 7 · 2018-04-29 16:22:52

408

Views

A topology on the set of all complete theories of a first order language

Published on 29 Apr 2018 - 16:22

score 630 · Answer 8 · 2018-04-30 01:51:58

630

Views

Using model theory to prove a Real Nullstellensatz?

Published on 30 Apr 2018 - 1:51

score 78 · Answer 9 · 2018-04-30 02:48:23

78

Views

Completeness and model completeness of the first order theory of faithful $G$-sets for a fixed infinite group $G$

Published on 30 Apr 2018 - 2:48

score 59 · Answer 10 · 2018-04-30 03:01:29

59

Views

Completeness and model completeness of the first order theory of Valuation rings

Published on 30 Apr 2018 - 3:01

score 59 · Answer 11 · 2018-05-04 12:37:17

59

Views

Logical expressivity and model classes

Published on 04 May 2018 - 12:37

score 169 · Answer 12 · 2026-03-25 01:18:34

169

Views

Since model theory must be founded in set theory, do you get different model theoretic results depending on your choice of set theory?

Published on 25 Mar 2026 - 1:18

score 78 · Answer 13 · 2018-05-04 14:56:40

78

Views

Does $L_\alpha\prec L_{\kappa^+}$?

Published on 04 May 2018 - 14:56

score 76 · Answer 14 · 2018-05-04 22:09:37

76

Views

Models in $L$ are models in $V$?

Published on 04 May 2018 - 22:09

score 38 · Answer 15 · 2026-03-25 04:42:47

38

Views

Help with fixing proof that transcendental extension of $\mathbb{Q}$ is dense in transcendental extension of $\mathbb{Q}_{p}$

Published on 25 Mar 2026 - 4:42

List Question

Showing that the class of finitely chromatic graphs is not closed under elementary equivalence without ultraproducts

Elementary proof of "irreducible polynomials remain irreducible over transcendental extension"?

Number of non-isomorphic models of the structure

Non-standard integers?

For an infinite group $G$, is the collection of all transitive $G$-sets first order elementary?

If $M,N$ are structures of some first order language , $N$ is finite and $h: N \to M$ is an elementary embedding, then is $h$ an isomorphism?

A topology on the set of all complete theories of a first order language

Using model theory to prove a Real Nullstellensatz?

Completeness and model completeness of the first order theory of faithful $G$-sets for a fixed infinite group $G$

Completeness and model completeness of the first order theory of Valuation rings

Logical expressivity and model classes

Since model theory must be founded in set theory, do you get different model theoretic results depending on your choice of set theory?

Does $L_\alpha\prec L_{\kappa^+}$?

Models in $L$ are models in $V$?

Help with fixing proof that transcendental extension of $\mathbb{Q}$ is dense in transcendental extension of $\mathbb{Q}_{p}$

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