CONFERENCES ORGANIZED:

• TOPOLOGY OF STRATIFIED SPACES,
  (with Greg Friedman, Eugenie Hunsicker and Anatoly Libgober),
  MSRI, Berkeley, September 8-12, 2008.
  Conference Proceedings Volume.

• SINGULARITIES IN THE MIDWEST,
  University of Wisconsin-Madison, Madison, WI, March 19-20, 2010.

• SINGULARITY THEORY CONFERENCE,
  University of Science and Technology of China, Hefei, China, July 25-31, 2011.
  Conference Proceedings Volume.

• SINGULARITIES IN THE MIDWEST, II,
  University of Wisconsin-Madison, Madison, WI, March 22-24, 2012.

• AMS Special Session on SINGULAR SPACES IN GEOMETRY, TOPOLOGY AND ALGEBRA at the Spring Western Sectional Meeting,
  (with Greg Friedman)
  University of Colorado Boulder, Boulder, CO, April 13-14, 2013.

• Special Session on SINGULARITIES IN GEOMETRY AND TOPOLOGY at the 2nd PRIMA Congress,
  (with Jiang Guangfeng, Mutsuo Oka and Jose Seade)
  Shanghai Jiaotong University, Shanghai, China, June 24-28, 2013.

• STRATIFIED SPACES IN GEOMETRIC AND COMPUTATIONAL TOPOLOGY AND PHYSICS,
  (with S. Cappell, M. Nicolau and K. Orr)
  University of Wisconsin-Madison, Madison, WI, March 30-April 2, 2015.

• WORKSHOP FOR YOUNG RESEARCHERS IN MATHEMATICS,
  (with C. Costara, C. Enache, D. Ibadula, L. Ignat and A. Macinic)
  Ovidius University, Constanta, Romania, May 21-24, 2015.

• Special Session GEOMETRY AND TOPOLOGY OF DIFFERENTIABLE MANIFOLDS AND ALGEBRAIC VARIETIES at the Eighth Congress of Romanian Mathematicians,
  (with Anca Macinic and Stefan Papadima)
  Iasi, Romania, June 26 - July 1, 2015.

• COMPUTATIONAL GEOMETRIC TOPOLOGY IN ARRANGEMENT THEORY,
  (with N. Budur, G. Denham, A. Macinic, D. Matei, H. Schenck and M. Wakefield)
  ICERM-Brown University, July 6-10, 2015.

• AMS Special Session on SINGULARITIES IN ALGEBRA, GEOMETRY AND TOPOLOGY at the Central Fall Sectional Meeting,
  (with Manuel Gonzalez Villa)
  Loyola University Chicago, Chicago, IL, October 3-4, 2015.

• SINGULARITIES IN THE MIDWEST, III,
  (with Manuel Gonzalez Villa)
  University of Wisconsin-Madison, Madison, WI, March 21-24, 2016.

• WORKSHOP FOR YOUNG RESEARCHERS IN MATHEMATICS,
  (with C. Costara, C. Enache, D. Ibadula, L. Ignat and A. Macinic)
  Ovidius University, Constanta, Romania, May 19-22, 2016.

• Focus Program on TOPOLOGY, STRATIFIED SPACES AND PARTICLE PHYSICS,
  (with M. Banagl, Edward Bierstone, Sylvain Cappell and Timo Weigand)
  Fields Institute, Toronto, Canada, August 8-26, 2016.
  • Topology, Stratified Spaces and Particle Physics Summer School, August 8-12, 2016.
  • Workshop on Singular Spaces in String and M-theory, August 15-19, 2016.
  • Workshop on Stratified Spaces: Perspectives from Analysis, Geometry and Topology, August 22-26, 2016.

• SINGULARITIES IN THE MIDWEST, IV,
  (with Manuel Gonzalez Villa and Botong Wang)
  University of Wisconsin-Madison, Madison, WI, March 17-19, 2017.

• WORKSHOP FOR YOUNG RESEARCHERS IN MATHEMATICS,
  (with C. Cazacu, C. Costara, D. Ibadula, L. Ignat, A. Macinic, L. Paunescu, D. Stamate)
  Institute of Mathematics of the Romanian Academy, Bucharest, Romania, May 17-20, 2017.

• SINGULARITY THEORY CONFERENCE,
  (with Rong Du and Yun Gao)
  East China Normal University, Shanghai, China, July 10-14, 2017.

• Oberwolfach Mini-Workshop: INTERACTIONS BETWEEN LOW-DIMENSIONAL TOPOLOGY AND COMPLEX ALGEBRAIC GEOMETRY,
  (with Stefan Friedl and Alex Suciu)
  Oberwolfach, Germany, October 22-28, 2017.

• SINGULARITIES IN THE MIDWEST, V,
  (with Botong Wang)
  University of Wisconsin-Madison, Madison, WI, March 23-24, 2018.

• WORKSHOP FOR YOUNG RESEARCHERS IN MATHEMATICS,
  (with C. Cazacu, I. Cimpean, C. Costara, N. Costea, D. Ibadula, L. Ignat, A. Macinic, D. Stamate)
  Institute of Mathematics of the Romanian Academy, Bucharest, Romania, May 17-18, 2018.

• Special Session on SINGULARITIES IN GEOMETRY, TOPOLOGY AND ALGEBRA at the Joint International Meeting of the American Mathematical Society and the Chinese Mathematical Society,
  (with Rong Du, Yongqiang Liu and Botong Wang)
  Fudan University, Shanghai, China, June 11-14, 2018.

• SINGULARITIES IN THE MIDWEST, VI,
  (with Botong Wang)
  University of Wisconsin-Madison, Madison, WI, March 15-16, 2019.

• AMS Special Session on GEOMETRY AND TOPOLOGY OF SINGULARITIES at the Fall Central Sectional Meeting,
  University of Wisconsin-Madison, Madison, WI, September 14-15, 2019.

• SINGULARITIES IN THE MIDWEST, VII, CANCELLED
  (with Botong Wang)
  University of Wisconsin-Madison, Madison, WI, March 20-21, 2020.

• SUZHOU WORKSHOP ON GEOMETRY, COMBINATORICS AND REPRESENTATION THEORY, POSTPONED
  (with Yi Gu, Yongqiang Liu and Botong Wang)
  Soochow University, Suzhou, China, July 6-9, 2020.

• SINGULARITIES IN THE MIDWEST (online edition),
  (with Eva Elduque, Moisés Herradón Cueto, Botong Wang)
  University of Wisconsin-Madison, Madison, WI, May 10-14, 2021.

• TIBAR60 Conference, celebrating Mihai Tibăr's 60th anniversary (online)
  (with Cezar Joița)
  University of Wisconsin-Madison, Madison, WI, September 10-11, 2021.

• SINGULARITIES IN THE MIDWEST, VIII
  University of Wisconsin-Madison, Madison, WI, March 9-13, 2023.

• AMS Special Session on SINGER-HOPF CONJECTURE IN GEOMETRY AND TOPOLOGY at the Spring Southeastern Sectional Meeting,
  (with Luca Di Cerbo)
  Georgia Institute of Technology, Atlanta, GA, March 18-19, 2023.

• ALGEBRAIC AND TOPOLOGICAL INTERPLAY OF ALGEBRAIC VARIETIES, celebrating the 60th Birthday of Enrique Artal and the 55th Birthday of Alejandro Melle
  (with J.I. Cogolludo, F. Delgado, M. González Villa, M. Izquierdo, M. Pe Pereira, H. Tokunaga)
  Jaca, Spain, June 12-17, 2023.

• GEOMETRY, TOPOLOGY AND ALGEBRA OF SINGULAR SPACES, celebrating the 70th anniversary of Prof. Alex Suciu and Prof. Laurențiu Păunescu
  (with Radu Popescu, Mihai Tibăr)
  Institute of Mathematics of the Romanian Academy, Bucharest, Romania, July 7-11, 2023.

• Special Session on GEOMETRY AND TOPOLOGY OF ALGEBRAIC VARIETIES at the The Tenth Congress of Romanian Mathematicians,
  (with Radu Popescu, Mihai Tibar)
  Pitesti, Romania, June 30 - July 5, 2023.

• SUZHOU WORKSHOP ON MATROID THEORY,
  (with Yi Gu, Yongqiang Liu and Botong Wang)
  Soochow University, Suzhou, China, July 8-12, 2024.

• CHARACTERISTIC CLASSES OF SINGULAR SPACES, celebrating the 60th anniversary of Prof. Jörg Schürmann,
  (with Yifeng Liu, Yongqiang Liu, Botong Wang and Lei Wu)
  Zhejiang University, Hangzhou, China, August 5-9, 2024.

• STRUCTURES ON SINGULAR SPACES THROUGH THE LENS OF CHARACTERISTIC CLASSES, celebrating the 60th anniversary of Prof. Jörg Schürmann,
  (with Markus Banagl)
  Heidelberg University, Heidelberg, Germany, September 16-20, 2024.

• Special Session on SINGULARITIES at the Joint meeting of the NZMS, AustMS and AMS,
  (with Laurentiu Paunescu)
  University of Auckland, New Zealand, December 9-13, 2024.