# Events

Seminars, workshops, and conferences I am organizing:

- Geometry and Topology Seminar

co-organizing with Mike Sullivan, Jon Simone, Noriyuki Hamada

Fridays 2:30 - 3:30 at UMass Amherst, LGRT 1634. - 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, 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 seminar, conference, and colloquium talks

**2020**

- Workshop on "Trisections: new directions in low-dimensional topology", University of Nebraska-Lincolon, NE, August.

- Workshop on "Complex and symplectic curve configurations'', Mittag-Leffler Institute, Stockholm, Sweden, July.

- Conference on "Holomorphic curves and low dimensional topology", Inter University Center, Dubrovnik, Croatia, June.

- AMS Special Session on "Geometric topology in the middle dimensions", Purdue University, IN, April.

- Lefschetz Fibrations Conference, Hacettepe University, Ankara, Turkey, January.

**2019**

- Workshop on "Unifying 4-dimensional knot theory", Banff Research Centre, AB, Canada, November.

- Workshop on "Lefschetz pencils and low dimensional topology'', Hokkaido University, Japan, June.

- Topology Seminar, Tokyo Institute of Technology, Japan, May.

- Topology Seminar, University of Tokyo, Japan, May.

- Colloquium, Kansas State University, Kansas, KS, May.

- Topology Seminar, Princeton University, Princeton, NJ, March.

- Colloquium, CUNY Queensborough, Queens, NY, March.

**2018**

- Bob Gompf's Birthday Conference, Austin, TX, July.

- Workshop on "Symplectic four-manifolds through branched coverings", American Institute of Mathematics, San Jose, CA, May.

- AMS Special Session on "Trisections of 4-manifolds and Low-dimensional Topology", Northeastern University, Boston, MA, April.

- Geometry & Topology Seminar, Caltech, Pasadena, CA, January.

- Geometry and Topology Seminar, Dartmouth College, Hanover, NH, January.**2017**

- Topology Seminar, University of Georgia, Athens, GA, October.

- PATCH Seminar, Temple University, Philadelphia, PA, October.

- Workshop on "Low dimensional topology and gauge theory", Casa Matematica Oaxaca, Oaxaca, Mexico, August.

**2016**

- Conference on "Four-manifolds and knot concordance", Max Planck Institute, Bonn, Germany, October.

- Hamilton Geometry and Topology Workshop, Dublin, Ireland, August.

- Workshop on "Flavors of gauge theory", Fields Institute, Toronto, ON, Canada, May.

- Symplectic Geometry Seminar, IAS / Princeton University, Princeton, NJ, April.

- Symplectic Geometry and Gauge Theory Seminar, Columbia University, New York, NY, April.

- Workshop on "Interactions of gauge theory with contact and symplectic topology in dimensions 3 and 4", Banff Research Centre, AB, Canada, March.

- Topology Seminar, University of Arkansas, Fayetteville, AR, February.

**2015**

- "4-Manifolds Workshop" at SNU Topology Winter School, Seoul National University, Seoul, South Korea, December.

- PIMS Symposium on "Geometry and Topology of Manifolds", University of British Columbia, Vancouver, BC, Canada, July.

- Special Session on "Geometric Structures on Low-Dimensional Manifolds and their Invariants" at the AMS Sectional Meeting, Georgetown University, Washington, DC, March.

- Great Lakes Geometry Conference, University of Michigan, MI, March.

- Workshop on "Fukaya categories of Lefschetz fibrations", MIT, Cambridge, MA, March.

- Gauge Theory, Topology, and Symplectic Geometry Seminar, Harvard University, Cambridge, MA, January.

- Algebraic and Geometric Topology Workshop in honor of Turgut Onder's 65th Birthday, METU, Ankara, Turkey, January.

**2014**

- Geometry Seminar, University of Virginia, Charlottesville, VA, November.

- Geometry and Topology Seminar, Michigan State University, East Lansing, MI, October.

- Workshop on "Topology and Invariants of 4-Manifolds", Simons Center for Geometry and Physics, Stony Brook, NY, August.

- Workshop on "Parameterized Morse Theory in Low-Dimensional and Symplectic Topology", Banff Research Centre, AB, Canada, March.**2013**

- Topology Seminar, University of Georgia, Athens, GA, November.

- Valley Geometry Seminar, University of Massachusetts, Amherst, MA, September.

- Conference on "Topology and Invariants of 4-Manifolds", University of Minnesota, Minneapolis, MN, August.

- International Gökova Geometry & Topology Conference, Muğla, Turkey, May.

- Brussels-Cologne Symplectic and Contact Geometry Seminar, Brussels, Belgium, April.

- Workshop on "Interactions of gauge theory with contact and symplectic topology in dimensions 3 and 4", Banff Research Centre, AB, Canada, March.

- Colloquium, Lehman College, NYC, NY, February.

- Colloquium, Arizona State University, Phoenix, AZ, February.

- Colloquium, Dartmouth College, Hanover, NH, February.

- Gauge Theory and Topology Seminar, Harvard University, Cambridge, MA, February.

- Colloquium, University of Hawaii, Honolulu, HI, USA, January.

- Colloquium, Temple University, Philadelphia, PA, January.

- Analysis Seminar, University of Pennsylvania, Philadelphia, PA, January.**2012**

- Colloquium, University of Massachusetts at Amherst, MA, November.

- Tech Topology Conference, Georgia Institute of Technology, Atlanta, GA, December.

- Topology Seminar, Brandeis University, Waltham, MA, November.

- Symplectic Geometry and Gauge Theory Seminar, Columbia University, New York, NY, November.

- Topology Seminar, Stony Brook University, Stony Brook, NY, November.

- Topology Seminar, Renyi Institute, Budapest, Hungary, November.

- Colloquium, Université Laval, Québec City, Québec, November.

- Geometry and Topology Seminar, Middle East Technical University, Ankara, Turkey, October.

- Invariants in low dimensional topology and knot theory, Oberwolfach, Germany, June.

- Georgia Topology Conference, Athens, GA, May.

- Geometry-Topology Seminar, Georgia Institute of Technology, Atlanta, GA, May.

- Workshop on "Geometric Structures on Manifolds", Banff, Canada, April.

- Séminaire de Géométrie, Université de Lyon, Lyon, France, April.

- London Geometry Seminar, University College, London, UK, March.

- Topology Seminar, University of Texas, Austin, TX, February.

- Geometry-Topology Seminar, Temple University, Philadelphia, PA, January.**2011**

- Oberseminar Geometrie, Topologie und Analysis, Universität zu Köln, Germany, November.

- Topology Seminar, Brandeis University, Waltham, MA, September.

- AMS Special Session on “Gauge Theory and Low-dimensional Topology”, Ithaca, NY, September.

- Aarhus Gauge Theory Workshop, Aarhus, Denmark, August.

- Symplectic and Differential Geometry Seminar, Vanderbilt University, Nashville, TN, May.

- Séminaire d'algébre, Université Laval, Québec City, Québec, April.

- Colloquium, SUNY Binghamton, NY, February.

- Geometry-Topology Seminar, University of Pennsylvania, Philadelphia, PA, January.

- Colloquium, University of California, Irvine, CA, January.

- Geometry and Topology Seminar, Dartmouth College, Hanover, NH, January.**2010**

- Colloquium, Max Planck Institute for Mathematics, Bonn, Germany, December.

- Four-dimensional Topology Conference, Hiroshima University, Hiroshima, Japan, November.

- Topology Seminar, Brandeis University, Waltham, MA, November.

- Geometry Seminar, Boston University, Boston, MA, October.

- Geometry and Topology Seminar, Boston College, Chestnut Hill, MA, October.

- Topology Seminar, Stony Brook University, Stony Brook, NY, October.

- Departmental Colloquium, Middle East Technical University, Ankara, Turkey, May.

- Geometry and Topology Seminar, Middle East Technical University, Ankara, Turkey, May.

- Differential Geometry and Symplectic Topology Seminar, University of Minnesota, Minneapolis, MN, April.**2009**

- Topology Seminar, Georgia Institute of Technology, Atlanta, GA, October.

- Algebra and Geometry Seminar, Syracuse University, NY, September.

- Topology Seminar, Tulane University, New Orleans, LA, February.

- Combinatorics Seminar, Tulane University, New Orleans, LA, February.

- Gauge Theory Seminar, Harvard University, Cambridge, MA, February.**2008**

- Topology Seminar, Brandeis University, Waltham, MA, September.

- Conference on “Singularity Theory from Geometric Viewpoints”, Kyushu University, Fukuoka, June.

- Geometry Seminar, University of Cape Town, South Africa, April.

- Topology Seminar, Max Planck Institute for Mathematics, Bonn, Germany, April.

- Geometry & Topology Seminar, Koc University, Istanbul, Turkey, March.