2018
Nov
14

# Logic Seminar - Yair Hayut

11:00am to 1:00pm

## Location:

Ross 63

**Global Chang's Conjecture**

**Yair Hayut -**(joint with Monroe Eskew)

For $\kappa < \lambda$ infinite cardinals let us consider the following generalization of the Lowenheim-Skolem theorem:

"For every algebra with countably many operations over $\lambda^+$ there is a sub-algebra with order type exactly $\kappa^+$".

We will discuss the consistency and inconsistency of some global versions of this statement and present some open questions.