Seminars, workshops, and conferences I am organizing:
- Geometry and Topology Seminar
co-organizing with Patricia Cahn, Miriam Kuzbary, and Riccardo Pedrotti
Fridays 2:30 – 3:30 at UMass Amherst, LGRT 1681. - Reading Seminar on Automorphism Groups of Manifolds
co-organized with Mihail Arabadji, Porter Morgan, Jie Min, and Kevin Sackel
Tuesdays 4:00 – 5:00 at UMass Amherst, LGRT 1685. - Foundations of Computational Geometry and Topology
co-organizing with Henry Adams, Erin Chambers, Baris Coskunuzer, and Jose Perea
ICERM, Providence, RI, May 18 – 21, 2026. - Summer school on Knotted surfaces in four-manifolds
co-organizing with Kyle Hayden, Gordana Matic, András Stipsicz, Masaki Taniguchi, and Ian Zemke
IAS/PCMI, Park City, UT, June 28 – July 18, 2026. - K3: A new problem list in low-dimensional topology
co-organized with Rob Kirby and Danny Ruberman
AIM, Pasadena, CA, October 30-November 3, 2023. - Braids in symplectic and algebraic geometry
co-organized with Anand Deopurkar, Benson Farb, Ailsa Keating and Anthony Licata
ICERM, Providence, RI, March 21-25, 2022. - Knotted surfaces in 4-manifolds
co-organized with Weimin Chen and Danny Ruberman
University of Massachusetts, Amherst, October 26-28, 2018. - Geometric structures on 3- and 4-manifolds
co-organized with Tom Mark, Gordana Matic and Andy Wand
Inter University Center, Dubrovnik, Croatia, June 11-15, 2018. - Floer homologies and topology of 4-manifolds
co-organized with Weimin Chen and Danny Ruberman
University of Massachusetts, Amherst, April 8-9, 2017. - Perspectives in topology and geometry of 4-manifolds
co-organized with Tom Mark, Gordana Matic, Jongil Park and Andras Stipsicz
Inter University Center, Dubrovnik, Croatia, June 6-10, 2016. - Geometry and topology of symplectic 4-manifolds
co-organized with Weimin Chen and Danny Ruberman
University of Massachusetts, Amherst, April 24-26, 2015. - Algebraic and Geometric Topology Workshop — in honor of Turgut Önder’s 65th birthday (poster)
Cebirsel ve Geometrik Topoloji Çalıştayı — Turgut Önder’in 65. yaşı onuruna (program)
co-organized with Mustafa Korkmaz and Burak Ozbagci
Middle East Technical University, Ankara, Turkey, January 9-10, 2015. - Group actions on smooth 4-manifolds
co-organized with Weimin Chen and Danny Ruberman
University of Massachusetts, Amherst, October 25-26, 2013. - Interactions between low dimensional topology and mapping class groups
co-organized with John Etnyre and Ursula Hamenstädt
MPIM, Bonn, July 1-5, 2013. - Geometry and topology of smooth 4-manifolds
co-organized with Jongil Park and Andras Stipsicz
MPIM, Bonn, June 3-7, 2013.
Invited seminars, conferences, and colloquia
- 2026
– Geometric Group Theory Seminar, Ohio State University, January 15 (postponed).
– Simons Collaboration on New Structures in Low-Dimensional Topology Annual Meeting, New York City, NY, March 26-27.
– Topology Seminar, Dartmouth College, Hanover, NH, April 2.
– Fountations of Computational Geometry and Topology, ICERM, Providence, RI, May 18 – 21.
– Geometry and Topology in Low Dimensions – Lasting Trends and Emerging Directions, Erdös Center, Budapest, Hungary, June 22-26.
– Topologie, Oberwolfach, Germany, June 28 – July 3.
– PCMI summer school on Knotted Surfaces in 4-manifolds, Park City, UT, June 28 to July 18.
– Encuentro Colombiano de Geometría y Topología (plenary talk), Cali, Colombia, August 10-14. - 2025
– Workshop on “Low-dimensional topology, dynamics, Floer homology, and higher algebra”, Princeton University, Princeton, NJ, March 24-26.
– Simons Collaboration on New Structures in Low-Dimensional Topology Annual Meeting, New York City, NY, March 27-28.
– Group Actions and Dynamics Seminar, University of Wisconsin, Madison, WI, April 7.
– Mapping Class Groups and Beyond, Middle East Technical University, Ankara, Turkey, May 14-18.
– Conference on “Modern developments in low-dimensional topology”, ICTP, Trieste, Italy, June 9-13.
– Conference on “Groups in topology and algebraic geometry”, Notre Dame, IL, June 16-20. - 2024
– Topology Seminar, University of South Florida, FL, March 18.
– New Structures in Low-Dimensional Topology Satellite Workshop, Princeton University, Princeton, NJ, March 25-27.
– Simons Collaboration on New Structures in Low-Dimensional Topology Annual Meeting, New York City, NY, March 28-29.
– Geometry and Topology Seminar, MIT, Cambridge, MA, April 1.
– Geometric Group Theory and Topology Seminar, TUFTS, Somerville, MA, April 2.
– Low Dimensional Topology Seminar, Max Planck Institute, Bonn, Germany, April 23.
– Gauge Theory, Low-Dimensional Topology, and Geometric Analysis Conference, Rutgers University, New Brunswick, May 13-17.
– No Boundaries Seminar, University of Chicago, Chicago, IL, May 22.
– Geometry and Topology Seminar, University of Chicago, Chicago, IL, May 23.
– Braids Reunion Conference, ICERM, Providence, RI, July 15-19. - 2023
– Low Dimensional Topology Seminar, Max Planck Institute, Bonn, Germany, March.
– Workshop on “Singularity theory”, Erdös Center, Budapest, Hungary, March.
– Workshop on “Low dimensional topology”, Erdös Center, Budapest, Hungary, March.
– Simons Collaboration on New Structures in Low-Dimensional Topology Annual Meeting, New York City, NY, March.
– BIRS workshop on “Interactions between Symplectic and Holomorphic Convexity in 4 Dimensions”, Banff, Canada, April.
– Topology Seminar, Max Planck Institute, Bonn, Germany, May.
– Seminari di Geometria, University of Pisa, Italy, May.
– Geometry and Topology Seminar, Uppsala University, Sweden, May.
– Workshop on “Interactions between singularity theory and low dimensional topology”, Erdös Center, Budapest, Hungary, June.
– Geometric Topology Seminar, Columbia University, New York, NY, October.
– Workshop on “K3: A new problem list in low-dimensional topology”, American Institute of Mathematics, Palo Alto, CA, October.
– Workshop on “Exotic 4-manifolds”, Stanford University, CA, December. - 2022
– AMS Special Session on “Gauge theory, geometric analysis, and low-dimensional topology” (virtual), Spring Eastern Sectional, Tufts University, Medford, MA, March.
– Workshop on “Interactions of gauge theory with contact and symplectic topology in dimensions 3 and 4” (virtual), Banff Research Centre, AB, Canada, March.
– Workshop on “Braids in symplectic and algebraic geometry”, ICERM, Providence, RI, March.
– Scientific Approach Seminar (virtual), Ozyegin University, Istanbul, Turkey, April.
– Workshop on “Braids in low-dimensional topology”, ICERM, Providence, RI, April.
– Colloquium, Western Washington University, WA, May.
– 17th International Workshop in Real and Complex Singularities (plenary lecture), Universidade de São Paulo, São Carlos, Brazil, July.
– Workshop on “4-Manifolds: From above and below”, CIRM, Luminy, France, September.
– Workshop on “Singularity theory and geometric topology”, Research Institute for Mathematical Sciences, Kyoto University, Japan, October.
– Topology Seminar, Osaka University, Osaka, Japan, November.
– Four-dimensional Topology Conference, Osaka University, Osaka, Japan, November.
– Topology Seminar, Kyushu University, Fukuoka, Japan, November.
– Topology Seminar, Tokyo Institute of Technology, Japan, November.
– Conference on “Deepening and evolution of applied singularity theory”, Yokohama, Japan, November.
– Workshop on “Complex and symplectic curve configurations”, Université de Nantes, France, December. - 2021
– AMS Special Session on “Geometry and topology in dimensions 3 and 4”, Joint Mathematics Meetings (virtual), January.
– Topology Seminar, Stanford University, CA, January.
– Virtual Trisectors Seminar, February.
– Virtual Trisectors Seminar, March.
– Algebraic Geometry and Differential Topology Seminar, Alfred Renyi Institute, Budapest, Hungary, March.
– AMS Special Session on “Gauge theory, geometry, and low-dimensional topology”, Spring Eastern Sectional (virtual), March.
– Topology Seminar, UC Riverside, CA, March.
– Bahar Mathematics Meetings (virtual), Turkey, May.
– Virtual Summer Trisectors Workshop, June.
– Mini-symposium on “Low dimensional topology”, European Congress of Mathematics (virtual), Slovenia, June.
– Directed Reading Program Turkey (virtual), September.
– Colloquium, University of Massachusetts at Amherst, MA, October. - 2020
– Lefschetz Fibrations Day, Hacettepe University, Ankara, Turkey, January.
– Boston Graduate Topology Seminar, Boston College, MA, February.
– AMS Special Session on “Gauge theory, geometric analysis, and low-dimensional topology” (virtual), Spring Eastern Sectional, Tufts University, Medford, MA, March.
– Workshop on “Interactions of gauge theory with contact and symplectic topology in dimensions 3 and 4”, Banff Research Centre, AB, Canada, March (virtual).
– Virtual Summer Trisectors Workshop, June.
– Conference on “Holomorphic curves and low dimensional topology”, Inter University Center, Dubrovnik, Croatia, June (postponed).
– Low-dimensional Topology Mini-symposium, 8th European Congress of Mathematics, Piran and Portorož, Slovenia, July (postponed).
– Workshop on “Complex and symplectic curve configurations”, Mittag-Leffler Institute, Stockholm, Sweden, July (postponed).
– Workshop on “Trisections: new directions in low-dimensional topology”, University of Nebraska-Lincoln, NE, August (canceled).
– Geometry-Topology Seminar, Middle East Technical University, Turkey, November.
– Virtual Winter Trisectors Workshop, December. - 2019
– Colloquium, CUNY Queensborough, Queens, NY, March.
– Topology Seminar, Princeton University, Princeton, NJ, March.
– Colloquium, Kansas State University, Kansas, KS, May.
– Topology Seminar, University of Tokyo, Japan, May.
– Topology Seminar, Tokyo Institute of Technology, Japan, May.
– Workshop on “Lefschetz pencils and low dimensional topology”, Hokkaido University, Japan, June.
– Workshop on “Unifying 4-dimensional knot theory”, Banff Research Centre, AB, Canada, November. - 2018
– Geometry and Topology Seminar, Dartmouth College, Hanover, NH, January.
– Geometry & Topology Seminar, Caltech, Pasadena, CA, January.
– AMS Special Session on “Trisections of 4-manifolds and low-dimensional topology”, Northeastern University, Boston, MA, April.
– Workshop on “Symplectic four-manifolds through branched coverings”, American Institute of Mathematics, San Jose, CA, May.
– Bob Gompf’s Birthday Conference, Austin, TX, July. - 2017
– Workshop on “Low dimensional topology and gauge theory”, Casa Matematica Oaxaca, Oaxaca, Mexico, August.
– PATCH Seminar, Temple University, Philadelphia, PA, October.
– Topology Seminar, University of Georgia, Athens, GA, October. - 2016
– Topology Seminar, University of Arkansas, Fayetteville, AR, February.
– Workshop on “Interactions of gauge theory with contact and symplectic topology in dimensions 3 and 4”, Banff Research Centre, AB, Canada, March.
– Symplectic Geometry and Gauge Theory Seminar, Columbia University, New York, NY, April.
– Symplectic Geometry Seminar, IAS / Princeton University, Princeton, NJ, April.
– Workshop on “Flavors of gauge theory”, Fields Institute, Toronto, ON, Canada, May.
– Hamilton Geometry and Topology Workshop, Dublin, Ireland, August.
– Conference on “Four-manifolds and knot concordance”, Max Planck Institute, Bonn, Germany, October.
– Colloquium, University of Massachusetts at Amherst, MA, November. - 2015
– Algebraic and Geometric Topology Workshop in honor of Turgut Onder’s 65th Birthday, METU, Ankara, Turkey, January.
– Gauge Theory, Topology, and Symplectic Geometry Seminar, Harvard University, Cambridge, MA, January.
– Workshop on “Fukaya categories of Lefschetz fibrations”, MIT, Cambridge, MA, March.
– Great Lakes Geometry Conference, University of Michigan, MI, March.
– Special Session on “Geometric Structures on Low-Dimensional Manifolds and their Invariants” at the AMS Sectional Meeting, Georgetown University, Washington, DC, March.
– PIMS Symposium on “Geometry and Topology of Manifolds”, University of British Columbia, Vancouver, BC, Canada, July.
– “4-Manifolds Workshop” at SNU Topology Winter School, Seoul National University, Seoul, South Korea, December. - 2014
– Workshop on “Parameterized Morse Theory in Low-Dimensional and Symplectic Topology”, Banff Research Centre, AB, Canada, March.
– Workshop on “Topology and Invariants of 4-Manifolds”, Simons Center for Geometry and Physics, Stony Brook, NY, August.
– Geometry and Topology Seminar, Michigan State University, East Lansing, MI, October.
– Geometry Seminar, University of Virginia, Charlottesville, VA, November. - 2013
– Analysis Seminar, University of Pennsylvania, Philadelphia, PA, USA, January.
– Colloquium, University of Hawaii, Honolulu, HI, USA, January.
– Colloquium, Temple University, Philadelphia, PA, USA, January.
– Colloquium, Dartmouth College, Hanover, NH, February.
– Colloquium, Arizona State University, Phoenix, AZ, February.
– Colloquium, Lehman College, NYC, NY, February.
– Gauge Theory and Topology Seminar, Harvard University, Cambridge, MA, February.
– Workshop on “Interactions of gauge theory with contact and symplectic topology in dimensions 3 and 4”, Banff Research Centre, AB, Canada, March.
– Brussels-Cologne Symplectic and Contact Geometry Seminar, Brussels, Belgium, April.
– International Gökova Geometry & Topology Conference, Muğla, Turkey, May.
– Conference on “Topology and Invariants of 4-Manifolds”, University of Minnesota, Minneapolis, MN, August.
– Valley Geometry Seminar, University of Massachusetts, Amherst, MA, September.
– Topology Seminar, University of Georgia, Athens, GA, November. - 2012
– Geometry-Topology Seminar, Temple University, Philadelphia, PA, January.
– Topology Seminar, University of Texas, Austin, TX, February.
– London Geometry Seminar, University College, London, UK, March.
– Séminaire de Géométrie, Université de Lyon, Lyon, France, April.
– Workshop on “Geometric Structures on Manifolds”, Banff, Canada, April.
– Georgia Topology Conference, Athens, GA, May.
– Geometry-Topology Seminar, Georgia Institute of Technology, Atlanta, GA, May.
– Workshop on “Invariants in low dimensional topology and knot theory”, Oberwolfach, Germany, June.
– Geometry and Topology Seminar, Middle East Technical University, Ankara, Turkey, October.
– Colloquium, Université Laval, Québec City, Québec, November.
– Topology Seminar, Renyi Institute, Budapest, Hungary, November.
– Topology Seminar, Stony Brook University, Stony Brook, NY, November.
– Symplectic Geometry Seminar, Columbia University, New York, NY, November.
– Topology Seminar, Brandeis University, Waltham, MA, November.
– Colloquium, University of Massachusetts Amherst, MA, December.
– Tech Topology Conference, Georgia Institute of Technology, Atlanta, GA, December. - 2011
– Geometry and Topology Seminar, Dartmouth College, Hanover, NH, January.
– Colloquium, University of California, Irvine, CA, January.
– Geometry-Topology Seminar, University of Pennsylvania, Philadelphia, PA, January.
– Colloquium, SUNY Binghamton, NY, February.
– Séminaire d’algèbre, Université Laval, Québec City, Québec, April.
– Symplectic and Differential Geometry Seminar, Vanderbilt University, Nashville, TN, May.
– Aarhus Gauge Theory Workshop, Aarhus, Denmark, August.
– AMS Special Session on “Gauge Theory and Low-dimensional Topology”, Ithaca, NY, September.
– Topology Seminar, Brandeis University, Waltham, MA, September.
– Oberseminar Geometrie, Topologie und Analysis, Universität zu Köln, Germany, November.
– Geometry & Topology Seminar, Koc University, Istanbul, Turkey, November. - 2010
– Differential Geometry and Symplectic Topology Seminar, University of Minnesota, Minneapolis, MN, April.
– Geometry and Topology Seminar, Boston College, Chestnut Hill, MA, October.
– Departmental Colloquium, Middle East Technical University, Ankara, Turkey, May.
– Topology Seminar, Stony Brook University, Stony Brook, NY, October.
– Geometry and Topology Seminar, Boston College, Chestnut Hill, MA, October.
– Geometry Seminar, Boston University, Boston, MA, October.
– Topology Seminar, Brandeis University, Waltham, MA, November.
– Four-dimensional Topology Conference, Hiroshima University, Hiroshima, Japan, November.
– Colloquium, Max Planck Institute for Mathematics, Bonn, Germany, December. - 2009
– Gauge Theory Seminar, Harvard University, Cambridge, MA, February.
– Combinatorics Seminar, Tulane University, New Orleans, LA, February.
– Topology Seminar, Tulane University, New Orleans, LA, February.
– Algebra and Geometry Seminar, Syracuse University, NY, September.
– Topology Seminar, Georgia Institute of Technology, Atlanta, GA, October. - 2008
– Geometry & Topology Seminar, Koc University, Istanbul, Turkey, March.
– Geometry Seminar, University of Cape Town, South Africa, April.
– Conference on “Singularity Theory from Geometric Viewpoints”, Kyushu University, Fukuoka, June.
– Topology Seminar, Brandeis University, Waltham, MA, September. - 2007
– Colloquium, Kansas State University, Manhattan, KS, January.
– Interactions of Geometry and Topology, Banff Research Centre, AB, Canada, March.
– Topology Seminar, Georgia Institute of Technology, Atlanta, GA, April.
– 2007 Graduate Topology Conference at University of Chicago, Chicago, IL, April.
– Geometry and Topology Seminar, Middle East Technical University, Ankara, Turkey, June.
– 3- and 4- manifolds Seminar, Michigan State Universtiy, East Lansing, MI, September
– Symplectic Geometry and Gauge Theory Seminar, Columbia University, New York, NY, September.
– Geometry and Topology Seminar, University of Massachusetts at Amherst, MA, November.