Seminar series
Date
Thu, 13 May 2021
16:30
Location
Virtual
Speaker
Lynn Scow
Organisation
California State University San Bernardino

We survey some of the applications of generalized indiscernible sequences, both in model theory and in structural Ramsey theory.  Given structures $A$ and $B$, a semi-retraction is a pair of  quantifier-free type respecting maps $f: A \rightarrow B$ and $g: B \rightarrow A$ such that $g \circ f: A \rightarrow A$ is quantifier-free type preserving, i.e. an embedding.  In the case that $A$ and $B$ are locally finite ordered structures, if $A$ is a semi-retraction of $B$ and the age of $B$ has the Ramsey property, then the age of $A$ has the Ramsey property.

Please contact us for feedback and comments about this page. Last updated on 03 Apr 2022 01:32.