All presentations

2025: Set theory and classification problems
ADM Society Seminar, London, February 2025
2023: Conjugacy, classification, and complexity
Two-Day Logic Meeting, Bristol, July 2023
: Borel classification of conjugacy problems
Nankai Logic Colloquium, Nankai, March 2023
2022: Jumps in the Borel complexity hierarchy
Bristol Logic and Set Theory Seminar, Bristol, November 2022
2021: Jumps in the Borel complexity hierarchy
Caltech Logic Seminar, Pasadena, September 2021
: Borel complexity theory - Classification and structure
Boise Mathematics Colloquium, Boise, 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, New York, 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, Boise, December 2019
: On conjugacy problems for graphs and trees
Boise Set Theory and Logic Seminar, Boise, 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, Boise, April 2019
: Introduction to continuous logic and model theory for metric structures
Boise Set Theory Seminar, Boise, March 2019
2018: On splitting families
Boise Algebra, Geometry, and Combinatorics Seminar, Boise, October 2018
: Vertex-transitive graphs and linear orders
Boise Set Theory Seminar, Boise, October 2018
: Classification of scattered linear orders
Boise Set Theory Seminar, Boise, March 2018
: Martin’s axiom and some applications
Boise Set Theory Seminar, Boise, January 2018
2017: Classification of countable models of PA and ZFC
Boise Set Theory Seminar, Boise, November 2017
: Borel complexity theory and classification problems
Oregon Mathematics Colloquium, Eugene, October 2017
: Equivalence relations and classification problems, parts 1 and 2
Boise Set Theory Seminar, Boise, September 2017
2016: Borel complexity theory in mathematics
Boise Math Graduate Seminar, Boise, September 2016
: On the set splittability problem
Boise Algebra, Geometry, and Combinatorics Seminar, Boise, September 2016
: Classifying automorphisms of countable trees
Boise Set Theory Seminar, Boise, September 2016
: The complexity of classification problems
Boise Mathematics Colloquium, Boise, April 2016
: López-Escobar’s theorem
Boise Set Theory Seminar, Boise, 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
Boise Math Graduate Seminar, Boise, October 2015
: Amalgamation properties and conjugacy
Boise Set Theory Seminar, Boise, 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, Boise, April 2015
: Introduction to continuous logic
Boise Set Theory Seminar, Boise, March 2015
: Conjugacy and homogeneous graphs, II
Boise Set Theory Seminar, Boise, February 2015
: Helping students experience genuine mathematical investigations
Boise Mathematics Teaching Talks, Boise, January 2015
2014: Conjugacy and homogeneous graphs
Boise Set Theory Seminar, Boise, September 2014
: Generalized Choquet spaces
Boise Extravaganza in Set Theory, Riverside, June 2014
: A longer Choquet game
Boise Set Theory Seminar, Boise, February 2014
2013: Countable abelian groups and conjugacy relations
Boise Set Theory Seminar, Boise, December 2013
: Splitting relations
Boise Set Theory Seminar, Boise, September 2013
: The Borel ordering on cardinal characteristics
Boise Set Theory Seminar, Boise, April 2013
: Urysohn spaces
Boise Set Theory Seminar, Boise, February 2013
2012: Set theory and C*-algebras
Boise Set Theory Seminar, Boise, 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, Boise, October 2012
: The many faces of E_0
Boise Set Theory Seminar, Boise, September 2012
: 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, New York, 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, College Station, August 2010
: Classification problems for models of arithmetic
CUNY Logic Workshop, New York, April 2010
: Invariant properties of equivalence relations
CUNY Logic Workshop, New York, 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
: On dimension and Borel reducibility
Workshop on Large Cardinals and Descriptive Set Theory, Vienna, June 2009
: Countable Borel equivalence relations
Bonn Logic Seminar, Bonn, May 2009
: Dimension and Borel reducibility
CUNY Logic Workshop, New York, April 2009
: Some countable Borel equivalence relations
MIT Logic Seminar, Boston, March 2009
2008: The set theory of classification problems
Bronx Community College Mathematics Seminar, New York, December 2008
: Countable Borel equivalence relations and torsion-free abelian groups
AMS Special Session on Model Theory and its Applications, Middletown, 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, New York, November 2007