16th International Luminy Workshop in Set Theory, September 13 - 17, 2021. "Exact big Ramsey degrees via coding trees"

Models and Sets Seminar, University of Leeds, May 5, 2021.

Caltech Logic Seminar, March 29, 2021 (online). "Fraisse classes with simply characterized big Ramsey degrees"

Midwest Model Theory Seminar, March 9, 2021 (online). "Fraisse classes with simply characterized big Ramsey degrees"

SEALS 2021, University of Florida, Gainesville, February 27 - 28, 2021 (online). "Ramsey theory on infinite structures" (plenary).

UltraMath 2020, Pisa, Italy, May 31 - June 6, 2020. Cancelled due to Covid-19.

Online Logic Seminar. April 9, 2020. "Ramsey properties on infinite structures".

Oberwolfach Workshop on Set Theory, Oberwolfach, Germany, April 5-11, 2020. Cancelled due to Covid-19.

ASL North American Meeting, UC Irvine, March 25-28, 2020, Special Session on Forcing and Ramsey Theory. Cancelled due to Covid-19, but they held a Virtual Meeting instead. Ramsey Theory on Fraisse structures

Mathematics Department Colloquium, Boise State University, March 10, 2020. "Ramsey Theory for Infinite Structures and Set Theoretic Methods."

UCLA Logic Colloquium. February 7, 2020. Talk on Strong coding trees and Ramsey theory on infinite structures.

I gave invited talks at the JMM in the two AMS-ASL Special Sessions: "Choiceless Set Theory and Related Areas", and "Logic Facing Outward". Denver, January 15-16, 2020. Slides: Barren extensions slides and Logic and Combinatorics

Set Theory Seminar at The Hebrew University. Chalk talks on December 11 and 18, 2019 on my work on big Ramsey degrees of Henson graphs.

Set Theory Seminar, Bar-Ilan University, December 9, 2019. Chalk talk on "Strong coding trees and applications to Ramsey theory on infinite graphs."

Carlos di Prisco Birthday Meeting, Bogota, Colombia, November 28-29, 2019. Barren extensions

Fall Southeast AMS Sectional Meeting, Special Session on Cech-Stone compactification of semigroups: Algebra, Topology, Dynamics, and Combinatorics, University of Florida at Gainesville, November 2-3, 2019. I gave a chalk talk on "Ramsey ultrafilter and friends", comparing results about Ramsey ultrafilters in regard to Rudin-Keisler, Tukey, barren extensions, etc. to similar results for ultrafilters with finite Ramsey degrees.

National Academies of Sciences, Engineering, and Medicine. "Mathematical Frontiers" Webinar Series. With Julia Knight, we were panelists on the topic of Logic and Foundations, September 10, 2019.

15th International Luminy Workshop in Set Theory, Luminy, France, September 23-27, 2019. Borel sets of Rado graphs are Ramsey

Casa Matematica Oaxaca, Workshop on Reverse Mathematics of Combinatorial Principles, September 15-20, 2019. Chalk talk on "Open problems in the reverse mathematics of Ramsey theory on trees and graphs."

AMS Fall Central Sectional Meeting, Special Session on "Topology and Descriptive Set Theory," Madison, WI, September 14-15, 2019. Borel partitions of a space of Rado graphs are Ramsey

Universidad de los Andes, research visit to Carlos DiPrisco. I gave a chalk talk in the set theory seminar titled, "Tukey theory of ultrafilters."

Casa Matematica Oaxaca, Set theory of the reals, August 4-9, 2019. (unfortunately unable to attend, due to a prior commitment)

Midsummer Combinatorial Workshop XXIV, July 29 - August 2, 2019, Prague, Czech Republic. Ramsey theory on infinite graphs

Logic Fest in the Windy City, May 30 - June 2, 2019. Tutorial: Ramsey theory on trees and applications to infinite graphs

50 Years of Set Theory in Toronto, May 13-17, 2019. Strong coding trees and applications to Ramsey theory on infinite graphs

Spring Topology and Dynamical Systems Conference, March 14-16, 2019. Special Session on Set Theoretic Topology, "Borel colorings of the Rado graph". (unable to attend because of flights cancelled due to a blizzard in Denver)

Notre Dame Logic Seminar, March 5, 2019.

Miami University, February 25 - March 1, 2019. Colloquium talk.

University of Florida, February 18-23, 2019. A talk in the Colloquium, and a talk in the Logic Seminar.

Arctic Set Theory Workshop 4, Kilpisjaervi, Finland, January 21-26, 2019. Ramsey theory of the Henson graphs.

ASL Winter Meeting, at the Joint Mathematics Meetings, Baltimore, January 18-19, 2019, (plenary). Ramsey theory of the Henson graphs.

University of Oxford, Analytic Topology in Mathematics and Computer Science Seminar, January 16, 2019. Ramsey theory and infinite graphs.

University of Vienna, at the invitation of Vera Fischer, January 7-12, 2019. I gave a Mini-course on Infinitary Ramsey Theory (slides and video available here), and a lecture on the Ramsey theory of Henson graphs.

Centro de Ciencias Matematicas, December 2-8, 2018, "The Halpern-Lauchli Theorem at uncountable cardinals". (chalk talk)

Unifying Themes in Ramsey Theory, Banff International Research Station, November 18-23, 2018. (chalk talk)

Notre Dame Logic Seminar, September 4, 2018. Ramsey theory of homogeneous structures

Generalised Baire Spaces, Amsterdam, The Netherlands, August 22-24, 2018. Perfect tree forcings for singular cardinals

Ramsey Theory in Logic, Combinatorics and Complexity, Bertinoro International Center for Informatics, Italy, July 15 - 20, 2018. Bertinoro talk

SETTOP, Novi Sad, Serbia, July 2-5, 2018, (plenary). (similar to Bertinoro talk)

Logic Seminar, University of Illinois, Urbana-Champaign, May 21, 2018. (chalk talk)

Association for Symbolic Logic North American Annual Meeting, May 16-19, 2018, Special Session on Set Theory. (chalk talk)

Logic Seminar, University of Illinois, Chicago, April 24, 2018. (similar to JMM talk)

52nd Spring Topology and Dynamical Systems Conference, Auburn University, March 14-17, 2018, Special Session on Set-theoretic topology. Applications of high dimensional Ellentuck spaces

ASL-AMS Special Session on Ramsey theory, set theory and logic, Joint Mathematics Meeting, San Diego, January 10-11, 2018. JMM talk

NUI Galway, School of Mathematics, Statistics and Applied Mathematics Seminar, December 7, 2017.

Workshop on Ultrafilters, Ramsey theory and dynamics, Institut Camille Jordan, University of Lyon 1, November 20-24, 2017. Ramsey theory, trees and ultrafilters

The 14th International Workshop in Set Theory, CIRM, Luminy, October 9-13, 2017. The universal triangle-free graph has finite big Ramsey degrees

BLAST 2017, Vanderbilt University, August 14-18, 2017 (plenary).

University of Oxford Mathematical Institute, Analytic Topology Seminar, July 13, 2017.

Association for Symbolic Logic 2017 North American Meeting, Boise, March 20-23, 2017, Special Session in Set Theory and its Applications to Analysis and Topology. The universal triangle-free graph has finite big Ramsey degrees

2017 Spring Topology and Dynamical Systems Conference, New Jersey City University, March 8-11, 2017, Special Session in Set-Theoretic Topology. Banach spaces from high dimensional Ellentuck spaces

Arctic Set Theory Workshop 3, Kilpisjaervi, Finland, January 25-30, 2017. On the finite big Ramsey degrees for the triangle-free graph: A progress report

Seventh Indian Conference on Logic and its Applications - 2017, Indian Institute of Technology Kanpur, January 5-7, 2017 (plenary). Ramsey Theory on Trees and Applications

RIMS Workshop on Infinite Combinatorics and Forcing Theory, Research Institute for Mathematical Sciences, Kyoto University, Japan, November 28 - December 1, 2016. I gave a tutorial on Ramsey theory in forcing. Tutorial 1 Tutorial 2 Tutorial 3 Expository paper corresponding to Tutorial 3, appeared in the RIMS Symposium Proceedings.

Set Theory and its Applications in Topology, Casa Matematica Oaxaca, Mexico, September 11-16, 2016. Topological Ramsey spaces in creature forcing

BEST 2016, San Diego, California, June 14-17, 2016 (plenary). Ramsey spaces coding universal triangle-free graphs and applications to Ramsey degrees

SEALS. University of Florida, February 27-28, 2016. Ultrafilters with complete combinatorics over L(R) Expository paper submitted to SEALS 2016 Proceedings

Association for Symbolic Logic Winter Meeting, at the Joint Mathematics Meeting, Seattle, Washington, January 6-9, 2016 (plenary). Inner topological Ramsey spaces

1st Pan Pacific International Conference on Topology and Applications. Min Nan Normal University, Zhangzhou, China, November 25 - 30, 2015. Tukey theory of ultrafilters

The Emmy Noether Society. Cambridge University, United Kingdom, November 17, 2015. Canonical equivalence relations (chalk talk)

The 5th European Set Theory Conference, Isaac Newton Institute, Cambridge, United Kingdom, August 24 - 28, 2015. Infinite dimensional Ellentuck spaces: video of chalk talk

30th Summer Conference on Topology and Its Applications, Galway, Ireland, June 23 - 26, 2015. I also served on a 1-hour career panel on June 22 during a workshop for graduate students and early career researchers.

49th Spring Topology and Dynamics Conference 2015 , Bowling Green State University, Ohio, May 14 - 16, 2015. Canonical cofinal maps on ultrafilters and properties inherited under Tukey reducibility

Forcing and Its Applications Retrospective Workshop, Fields Institute, Toronto, Canada, March 29 - April 2, 2015. Higher dimensional Ellentuck spaces

Miniworkshop at the Kurt Goedel Research Center for Mathematical Logic, University of Vienna, Austria, February 20, 2015. High and higher dimensional Ellentuck spaces and initial segments in the Rudin-Keisler and Tukey types of non-p-points

Arctic Set Theory 2, Kilpisjarvi Research Center, Finland, February 12 - 17, 2015.

Oberwolfach Workshop on Set Theory, Oberwolfach, Germany, January 12 - 19, 2014. Progress in Ramsey Theory