All presentations

2023: Borel classification of conjugacy problems
Nankai Logic Colloquium, March 2023
2022: Jumps in the Borel complexity hierarchy
Bristol Logic and Set Theory Seminar, November 2022
2021: Jumps in the Borel complexity hierarchy
Caltech Logic Seminar, Pasadena, September 2021
: Borel complexity theory - Classification and structure
Mathematics department colloquium, Boise State University, September 2021
2020: Bernoulli jumps of equivalence relations
University of Florida Logic Seminar, Gainesville, November 2020
: Classification of countable models of ZFC
CUNY Models of PA seminar, September 2020
: Jumps and the classification of scattered linear orders
SEALS Conference, Gainesville, February 2020
2019: Locally finite groups and automorphisms
Boise Set Theory and Logic Seminar, December 2019
: On conjugacy problems for graphs and trees
Boise Set Theory and Logic Seminar, October 2019
: Jumps of equivalence relations and scattered linear orders
CUNY set theory seminar, New York, September 2019
: Borel morphisms between cardinal characteristics, parts 1 and 2
Boise Set Theory Seminar, April 2019
: Introduction to continuous logic and model theory for metric structures
Boise Set Theory Seminar, March 2019
2018: On splitting families
Boise Algebra, Geometry, and Combinatorics seminar, October 2018
: Vertex-transitive graphs and linear orders
Boise Set Theory Seminar, October 2018
: Classification of scattered linear orders
Boise Set Theory Seminar, March 2018
: Martin’s axiom and some applications
Boise Set Theory Seminar, January 2018
2017: Classification of countable models of PA and ZFC
Boise Set Theory Seminar, November 2017
: Borel complexity theory and classification problems
Oregon mathematics department colloquium, Eugene, October 2017
: Equivalence relations and classification problems, parts 1 and 2
Boise Set Theory Seminar, September 2017
2016: Borel complexity theory in mathematics
A talk for the BSU math graduate seminar, September 2016
: On the set splittability problem
Boise Algebra, Geometry, and Combinatorics seminar, September 2016
: Classifying automorphisms of countable trees
Boise Set Theory Seminar, September 2016
: The complexity of classification problems
Mathematics department colloquium, Boise State University, April 2016
: López-Escobar’s theorem
Boise Set Theory Seminar, April 2016
: López-Escobar’s theorem and metric structures
AMS special session on descriptive set theory and its applications, Salt Lake, April 2016
2015: Set theory and classification problems
A talk for the Boise math graduate student seminar, October 2015 (notes)
: Amalgamation properties and conjugacy
Boise Set Theory Seminar, Wednesday September 2015
: The TVC and metric structures
Second Vaught’s conjecture workshop, Berkeley, June 2015
: López-Escobar’s theorem for metric structures
Boise Set Theory Seminar, April 2015
: Introduction to continuous logic
Boise Set Theory Seminar, March 2015
: Conjugacy and homogeneous graphs, II
Boise Set Theory Seminar, February 2015
: Helping students experience genuine mathematical investigations
Boise State University mathematics department, January 2015
2014: Conjugacy and homogeneous graphs
Boise Set Theory Seminar, September 2014
: Generalized Choquet spaces
Boise extravaganza in set theory, Riverside, June 2014
: A longer Choquet game
Boise Set Theory Seminar, February 2014
2013: Countable abelian groups and conjugacy relations
Boise Set Theory Seminar, December 2013
: Splitting relations
Boise Set Theory Seminar, September 2013
: The Borel ordering on cardinal characteristics
Boise Set Theory Seminar, April 2013
: Urysohn spaces
Boise Set Theory Seminar, February 2013
2012: Set theory and C*-algebras
Boise Set Theory Seminar, December 2012
: Constructing automorphisms of corona algebras
ASL winter meeting, San Diego, January 2013
: The random graph and its automorphisms
Boise Algebra, Geometry, and Combinatorics seminar, October 2012
: The many faces of E_0
Boise Set Theory Seminar, September 2012 (notes)
: Tukey maps between partial orders
Student Set Theory and Topology Seminar, Toronto, March 2012
2011: Cardinal characteristics and the Borel Tukey order
CMS winter meeting, Toronto, December 2011
: Borel morphisms and splitting families
Michigan logic seminar, Ann Arbor, November 2011
: The Borel Tukey order on cardinal characteristics
CUNY Logic Workshop, November 2011
: Borel equivalence relations and the conjugacy problem
Young Set Theory Workshop, Königswinter, March 2011
2010: Borel reducibility and actions of SLn(Z)
Concentration Week in Set Theory and Functional Analysis, Texas A&M, August 2010
: Classification problems for models of arithmetic
CUNY Logic Workshop, April 2010
: Invariant properties of equivalence relations
CUNY Logic Workshop, February 2010
2009: Borel subsets of generalized Baire space
Effective Mathematics of the Uncountable, New York, August 2009
: Inifinite-time Turing machines and Borel reducibility
Computability in Europe, Heidelberg, July 2009 (extended abstract)
: On dimension and Borel reducibility
Workshop on large cardinals and descriptive set theory, Vienna, June 2009
: Countable Borel equivalence relations
Bonn Logische Oberseminar, May 2009
: Dimension and Borel reducibility
CUNY Logic Workshop, April 2009
: Some countable Borel equivalence relations
MIT Logic Seminar, March 2009
2008: The set theory of classification problems
Bronx Community College mathematics seminar, December 2008
: Countable Borel equivalence relations and torsion-free abelian groups
AMS special session on model theory and its applications, Wesleyan, October 2008
: Equivalence relations and infinite-time computable reductions
Effective Mathematics of the Uncountable, New York, August 2008
: On the classification of torsion-free abelian groups up to isomorphism and quasi-isomorphism
Joint mathematics meetings, San Diego, January 2008
2007: On the classification of torsion-free abelian groups
CUNY Logic Workshop, November 2007