CONFERENCES ORGANIZED:

TOPOLOGY OF STRATIFIED SPACES,
(with Greg Friedman, Eugenie Hunsicker and Anatoly Libgober),
MSRI, Berkeley, September 812, 2008.
Conference Proceedings Volume.

SINGULARITIES IN THE MIDWEST,
University of WisconsinMadison, Madison, WI, March 1920, 2010.

SINGULARITY THEORY CONFERENCE,
University of Science and Technology of China, Hefei, China, July 2531, 2011.
Conference Proceedings Volume.

SINGULARITIES IN THE MIDWEST, II,
University of WisconsinMadison, Madison, WI, March 2224, 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 1314, 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 2428, 2013.

STRATIFIED SPACES IN GEOMETRIC AND COMPUTATIONAL TOPOLOGY AND PHYSICS,
(with S. Cappell, M. Nicolau and K. Orr)
University of WisconsinMadison, Madison, WI, March 30April 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 2124, 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)
ICERMBrown University, July 610, 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 34, 2015.

SINGULARITIES IN THE MIDWEST, III,
(with Manuel Gonzalez Villa)
University of WisconsinMadison, Madison, WI, March 2124, 2016.

WORKSHOP FOR YOUNG RESEARCHERS IN MATHEMATICS,
(with C. Costara, C. Enache, D. Ibadula, L. Ignat and A. Macinic)
Ovidius University, Constanta, Romania, May 1922, 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 826, 2016.

SINGULARITIES IN THE MIDWEST, IV,
(with Manuel Gonzalez Villa and Botong Wang)
University of WisconsinMadison, Madison, WI, March 1719, 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 1720, 2017.

SINGULARITY THEORY CONFERENCE,
(with Rong Du and Yun Gao)
East China Normal University, Shanghai, China, July 1014, 2017.
 Oberwolfach MiniWorkshop:
INTERACTIONS BETWEEN LOWDIMENSIONAL TOPOLOGY AND COMPLEX ALGEBRAIC GEOMETRY,
(with Stefan Friedl and Alex Suciu)
Oberwolfach, Germany, October 2228, 2017.

SINGULARITIES IN THE MIDWEST, V,
(with Botong Wang)
University of WisconsinMadison, Madison, WI, March 2324, 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 1718, 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 1114, 2018.

SINGULARITIES IN THE MIDWEST, VI,
(with Botong Wang)
University of WisconsinMadison, Madison, WI, March 1516, 2019.
 AMS Special Session on
GEOMETRY AND TOPOLOGY OF SINGULARITIES at the
Fall Central Sectional Meeting,
University of WisconsinMadison, Madison, WI, September 1415, 2019.