New posts in model-theory

Confusion of the decidability of $(N,s)$

How to finish proof that $T$ has an infinite model?

What is the point of expanding a structure $M$ by constants from $M$ itself? [duplicate]

Can't EF game theory be applied to finite languages WITH function symbols?

Symmetry groups corresponding to terms in an algebra

Non-isomorphic structures of the same cardinality which are elementary equivalent

Proof- vs. model-theoretic definitions of extension and of conservative extension

Confusion over the definition of "model"

Do we know the index of the minimal stage in the constructible universe which is a model of $ZFC$?

Tennenbaum's theorem without overspill

Continuations in mathematics: nice examples?

Why continuum hypothesis implies the unique hyperreal system, ${}^{\ast}{\Bbb R}$?

Infinitary logic doesn't have (finite) Robinson property: a counterexample?

On Pudlak's "Life in an Inconsistent World"

Whats wrong with this model theoretic proof of the twin primes conjecture?

Fraïssé limits and groups

Henkin vs. "Full" Semantics for Second-order Logic and Multi-Sorted First Order Interpretations

What is Model Theory

Is Gödel's incompleteness theorem provable without any model-theoretic notion?

Comparing Category Theory and Model Theory (with examples from Group Theory).