The 23rd BEST conference was held June 15–16 in San Diego, CA.

Shehzad Ahmed – Jonsson cardinals and pcf theory

Liljana Babinkostova – A weakening of the closure operator

Kyle Beserra – On the conjugacy problem for automorphisms of countable regular trees

Erin Carmody – Killing them softly

William Chan – Every analytic equivalence relation with all Borel classes is Borel somewhere

John Clemens – Relative primeness of equivalence relations

Paul Corazza – The axiom of infinity, quantum field theory, and large cardinals

Cody Dance – Indiscernibles for $L[T_2,x]$

Natasha Dobrinen – Ramsey spaces coding universal triangle-free graphs and applications to Ramsey degrees

Paul Ellis – A Borel amalgamation property

Monroe Eskew – Rigid ideals

Daniel Hathaway – Disjoint Borel functions

Jared Holshouser – Partition properties for non-ordinal sets under the axiom of determinacy

Paul McKenney – Automorphisms of $\mathcal P(\lambda)/\mathcal I_\kappa

Kaethe Minden – Subcomplete forcing and trees

Daniel Soukup – Orientations of graphs with uncountable chromatic number

Simon Thomas – The isomorphism and bi-embeddability relations for finitely generated groups

Douglas Ulrich – A new notion of cardinality for countable first order theories

Kameryn Williams – Minimal models of Kelley-Morse set theory

Martin Zeman – Master conditions from huge embeddings