Conference "Young Tableaux and Schur Functors in Algebra and Geometry", Torun 1980

Conference on Commutative Algebra, Durham 1981

Seminaire Lotharingien de Combinatoire, Sainte-Croix-aux-Mines 1983

Algebra Seminar, The University Roma Tor Vergata 1984

Seminaire d'Algebre Dubreil-Malliavin, Paris 1984, 1988

The Kuratowski Award Lecture at the Annual Meeting of Polish Math. Society,

Kielce 1985

Conference on Algebraic Geometry at Humboldt University, Berlin 1985

Algebraic Geometry Seminar, Brown University 1986

Shafarevich Seminar, Steklov Institute Moscow 1986

Banach Center Semester "Classical Algebraic Structures" (1+1) Warsaw 1988

Conference "Combinatorics, Special Functions and Representation theory",

Oberwolfach 1988

Algebraic Geometry Seminar, KTH Stockholm 1989

The Zeuthen Symposium, Copenhagen 1989

Algebraic Geometry Seminar, UBC Vancouver (4) 1989

Algebraic Geometry Seminar, The University of Ferrara (4) 1989

Algebraic Geometry Seminar, The University of Trento 1989

Algebraic Geometry Seminar. The University of Florence 1989

The Habilitation Lecture, IM PAN Warsaw 1990

Conference on Algebra and its Applications, National Polytechnic

Institute (2), Mexico City 1991

Algebraic Geometry Seminar, Bergen 1991

Algebraic Geometry Seminar, Oslo 1991

Algebraic Geometry Seminar, Tromso 1991

Algebraic Geometry Seminar, Complutense University, Madrid 1992

Conference "Intersection Theory and Enumerative Geometry",

Complutense University, Madrid 1992

Algebra Seminar, The University of Essen 1992

Commutative Algebra Seminar, The University of Osnabruck 1992

Algebraic Geometry Seminar, The University of Bayreuth 1992

Max-Planck Institut fur Mathematik Bonn (MPI-Oberseminar or Algebraic Geometry

Seminar) 1992, 1993, 1994, 1995, 1996, 2000, 2001, 2006

Le-Teissier Singularity Seminar , Ecole Normale Superieure (2) Paris 1993

Algebra Seminar, Scuola Normale Pisa 1993, 1995

Algebraic Geometry Seminar, University of Amsterdam 1995, 2000

Banach Center Colloquium, Warsaw 1995

Summer School "Degeneracy loci and Schubert Varieties" (5), Schloss Thurnau,

The University of Bayreuth 1995

Conference on Algebraic Geometry, ICTP Trieste 1995

Algebraic Geometry Seminar, The University of Chicago 1996

Algebraic Geometry Conference, Levico Terme 1996

Algebraic Geometry Conference, The University Roma Tor Vergata 1997

Algebraic Geometry Seminar, Weizmann Institute, Rehovot 1997

Colloquium, Universite d'Angers 1997

"International Conference on Intersection Theory", Bologna 1997, 1999

Singularity Seminar, Kagoshima University 1998

Conference "Singularities in Geometry and Topology", Sapporo 1998

Conference "Interaction of Combinatorics and Representation Theory" (2),

RIMS Kyoto 1998

Algebraic Geometry Seminar, Nagoya University 1998

Workshop on Singularities, Luminy 1999

Conference "Renaissance of Combinatorics", Nankai University, Tianjin 1999

Arithmetic and Algebraic Geometry Seminar, The Adam Mickiewicz University

Poznan 1999

Colloquium, The University of Szczecin 1999

Algebraic Geometry Seminar, University of Essen 2000

Conference "The Heritage of I. Schur's 1901 Dissertation", Gregynog Hall,

Newtown, Powys 2001

NSF/CBMS Conference on Algebraic Combinatorics, NCSU Raleigh 2001

MPI - IM PAN Symposium "Manifolds in Mathematics and in Other Fields", Banach

Center Warsaw 2002

Academy of Mathematics and System Sciences, Chinese Academy

of Sciences (4), Beijing 2002

Colloquium, Beijing University 2002

Algebraic Geometry Seminar, Guangzhou University 2002

Algebraic Geometry Conference, Institute of Mathematics of Romanian

Academy of Sciences (2), Bucharest 2002

Colloquium, The University of Gdansk 2002, 2007, 2014

Conference on Conceptual Mathematics, Grzegorzewice 2003

Conference "Algebraic Geometry, Algebra and Applications", Borovetz 2003

Seminaire Lotharangien de Combinatoire "LascouxFest", St. Jacques 2004

Russian-Polish School-Seminar, Banach Center Bedlewo 2004

Discrete Harmonic Analysis Seminar, The University of Wroclaw 2005

Algebraic Geometry Seminar, Bilkent-METU Ankara 2005

Antalya Algebra Days, Antalya 2005, 2007

Algebraic Geometry Seminar, Politecnico di Torino 2005, 2017

Harmonic Analysis, Banach Center Bedlewo 2005

Brieskorn's Singularity Seminar (2), Bonn University 2006

Conference "Real and Complex Singularities", Sao Carlos 2006, 2008

Algebraic Geometry Seminar (6), METU Ankara 2006

Colloquium, Tata Institute of Fundamental Research Mumbai 2007

Algebra Seminar, Chennai Mathematical Institute 2007

Ramanujan Gymnasium, Kumbakonam 2007

Algebra Seminar, Indian Institute of Technology Bombay 2007, 2009, 2018

Algebraic Geometry Seminar, RIMS Kyoto 2008, 2011, 2016, 2019

Algebraic Geometry Seminar, The University of Tokyo 2008, 2016

Colloquium, The University of Kagoshima 2008

2nd Forum of Polish Mathematicians, Czestochowa 2008

Colloquium, Institute of Mathematical Sciences Chennai 2009

Geometry Seminar, Indian Institute of Statistics Bangalore 2009

Conference "The Interplay of Algebra and Geometry" in honor of

C. De Concini, Cortona 2009

Mini-conference for SSDNM Phd-students, IM PAN Warsaw 2010

Feza Gursey Institute (4), Istanbul 2011

Conference "The Theory of Singularities", Hefei 2011

Colloquium, Jagiellonian University Cracow 2011

Conference "Arithmetic and Algebraic Geometry", The University of Tokyo 2012

Conference "Schubert Calculus", 5th MSJ-SI Osaka 2012

Algebraic Geometry Session of the DMV-PTM meeting, Poznan 2014

Algebra Seminar, Okayama University 2014

Lie Groups and Representation Theory Seminar, The University of Tokyo 2015, 2016

Algebraic Geometry Conference IMPANGA 15, Banach Center Bedlewo 2015

Thematic Program on Algebraic Geometry, IMPA Rio de Janeiro 2015

Kazarian-Lando Seminar, Laboratory of Algebraic Geometry and its Applications HSE,

Moscow 2015

A Weekly Seminar of Laboratory of Algebraic Geometry and its Applications HSE,

Moscow 2015

Joint Algebraic Geometry/History of Mathematics Seminar of Jagiellonian University,

Cracow , March 2016

Leopold Infeld Colloquium, Faculty of Physics, The University of Warsaw 2016

Okayama University of Science (2) June 2016, October 2019

Algebraic Geometry Seminar of Jagiellonian University, Cracow , October 2016

Algebraic Geometry Seminar of Hodge Institute, Edinburgh 2016

Arithmetic Algebraic Geometry Seminar, The University of Poznan 2016

Accademia Peloritana, Messina, May 2017

University of Palermo, May 2017

University of Messina, June 2017, July 2019 (2)

Algebraic Geometry Seminar of Jagiellonian University (a talk for Kamil Rusek), October 2017

International Festival in Schubert Calculus, Sun Yat-sen University, Guangzhou, November 2017

Geometrical Methods in Physics, IM PAN Warsaw, April 2018

Analytic Geometry Seminar of Jagiellonian University, Cracow, April 2018

Alfred Renyi Institute of Mathematics, Budapest, June 2018

Conference: "Geometry, Local and Global" in honour of V. Srinivas, TIFR Mumbai, October 2018

Algebraic Geometry Seminar, University of Szczecin, November 2018

Algebraic Geometry Conference in honour of T. Katsura, University of Tokyo,

December 2018

XV Szczecin Mathematical Colloquium, April 2019

Conference: "Real and complex singularities" in honour of A. ParusiĆski,

Institute Cargese (Corsica), May 2019

University Reggio Calabria, July 2019 (2)

Sapienza University of Rome, November 2019 (5)

Analytic Geometry Seminar, University of Lodz, online talk June 2020

Algebraic Geometry Seminar, Jagiellonian University, online talk November 2020