I am a PhD student at the Department of Mathematics, University of Toronto. My advisor is Bálint Virág.
Previously (20062011) I studied mathematics, physics and computer science at the University of Warsaw, where I obtained
my M. Sc. degree in mathematics at Faculty of Mathematics, Informatics and Mechanics (my advisor was
Piotr Przytycki).
CV (updated January 2015).
Research interests
 geometric group theory, discrete probability, spectral graph theory, random walks on groups
More generally, I am interested in mathematics with probabilistic, geometric or combinatorial flavour, theoretical computer science and theoretical physics. In case you are interested, here is a list of courses I have taken during my studies.
I coorganized Geometric Group Theory Student Workshop in Będlewo in May 2013.
Publications

NonLiouville groups with return probability exponent at most 1/2
(arxiv:1408.6895)
Michał Kotowski, Bálint Virág
preprint

Random groups and property (T): Żuk's theorem revisited
(arxiv:1106.2242)
Marcin Kotowski, Michał Kotowski
J. London Math. Soc. (2013) 88 (2): 396416

Tight Bell inequalities with no quantum violation from qubit unextendible product bases
(arxiv:1112.3238)
Remigiusz Augusiak, Tobias Fritz, Marcin Kotowski, Michał Kotowski, Marcin Pawłowski, Maciej Lewenstein, Antonio Acín
Phys. Rev. A 85, 042113 (2012)

Universal nonlinear entanglement witnesses (arxiv:1003.0210)
Marcin Kotowski, Michał Kotowski, Marek Kuś
Phys. Rev. A 81, 062318 (2010)
Expository and popular articles
Education and teaching gifted students
I am very passionate about teaching talented high school students and exposition of science. You can read more about the initiatives I've been involved in here.
Notes
 Here are some notes on spectral graph theory and expanders (for a short course I cotaught in Warsaw in April 2012).
 Short notes on combinatorics of finite fields, Combinatorial Nullstellensatz and finite field Kakeya conjecture (for a course for high school students taught at WWW 8, August 2012).
 Some notes about the Gromov monster group construction (from a talk in the Probability, Geometry and Groups seminar).
How to pronounce my name
My name is pronounced [ˈmʲixaw kɔˈtɔfskʲi] (IPA) or like "mehow kotovsky" ("ł" is pronounced like "w" in English).
Personal webpage
Apart from science, I am interested, among other things, in books, mountain hiking, music, digital photography, teaching gifted students, philosophy, cognitive science, improv etc. etc. You can find out more on my personal webpage.