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Mathematical Institute, Utrecht University


During the spring semester, I am teaching the course Modern Theory of Markov Chains from the SFM program. I also help with the exercise classes of the course Models and Simulation.

In January 2014, I taught a two-week intensive course Introduction to Probability and Statistics to students from the University College. Since Fall 2012, I have also taken care of exercise sessions for a variety of courses including Calculus I (×2), Introduction to Probability and Statistics, Differential Equations, Probability, and Mathematical Techniques II.

Office hours:  Please drop me an email to be sure I am around.

Research Interests

I am interested in the interplays between statistical mechanics, ergodic theory, probability, cellular automata, and computation theory. Here are some questions and topics I think about.

Work in Progress

[2012–] (with Stein Bethuelsen and Roberto Fernández) On coupling random fields ....

[2012–] (with Jarkko Kari) Statistical mechanics of surjective cellular automata. Preprint.


[2012] (with Amir Daneshgar and Alireza Rahimi), Function Simulation, Graph Grammars and Colourings, International Journal of Computer Mathematics, 90(7):1334–1357, 2013.

[2011] (with Aernout C. D. van Enter and Giulio Iacobelli), Potts model with invisible colours: Random-cluster representation and Pirogov-Sinai analysis, Reviews in Mathematical Physics, 24(2):1250004, 2012.

[2011] (with Jarkko Kari), Conservation laws and invariant measures in surjective cellular automata, in Proceedings of AUTOMATA-2011, DMTCS, 113–122, 2012.

[2011] (with Aernout C. D. van Enter and Giulio Iacobelli), First-order transition in Potts models with ``invisible'' states: Rigorous proofs, Progress of Theoretical Physics, 126(5):983–991, 2011.

[2010] (with Enrico Formenti and Jarkko Kari), On the hierarchy of conservation laws in a cellular automaton, Natural Computing, 10(4):1275–1294, 2011.

[2010] (with Enrico Formenti, Jean-Paul Comet, and Gilles Bernot), On the impact of distance between two genes on their interaction curve, Journal of Mathematical Biology, 64(1–2):131–147, 2012.
Preliminary results presented in MTNS-2010.

[2009] Conservation Laws in Cellular Automata, in G. Rozenberg et al. (Eds.), Handbook of Natural Computing (Vol I), 259–286, Springer, 2012.

[2009] Conservation Laws in Cellular Automata, Ph.D. thesis, University of Turku, 2009.  Supervisor:  Professor Jarkko Kari.  Opponent: Professor Bruno Durand. Errata to be added.

[2008] (with Jarkko Kari), Combinatorics of Conservation Laws, Bulletin of the EATCS, 95:183–197, June 2008.

[2008] (with Jarkko Kari), A Particle Displacement Representation for Conservation Laws in Two-Dimensional Cellular Automata, in Proceedings of JAC-2008, B. Durand (Ed.), 65–73, 2008.

[2007] (with Enrico Formenti and Jarkko Kari), The Most General Conservation Law for a Cellular Automaton, in Proceedings of CSR-2008, E. A. Hirsch et al. (Eds.), LNCS 5010, 194–203, 2008.

[2006] (with Tim Boykett and Jarkko Kari), Conservation Laws in Rectangular CA, Journal of Cellular Automata, 3(2):115–122, 2008.

[2005] Cellular Automata Reversible over Limit Set, Journal of Cellular Automata, 2(2):167–177, 2007.

[2004] (with Amir Daneshgar and Hossein Hajiabolhassan), On the Complexity of Unique List Colourability and the Fixing Number of Graphs, Ars Combinatoria, 97, 2010.

[2000] (with Amir F. Dana) Evolutionary Computers, in Proc. of ISCEE'2000 (3rd Iranian Student Conference on Electrical Engineering), Nov. 2000, Tehran, Iran.

Old Writings

[2006] Wang Tiles.

[2004] Multiparty Interactive Protocols and Some Applications (in Persian), Master's Thesis, Department of Mathematical Sciences, Sharif University of Technology.  Supervisor: Professor Amir Daneshgar.



Contact Information

Postal Address
Mathematical Institute
Utrecht University
PO Box 80010
3508 TA Utrecht, The Netherlands

Office Place

You may find me in Room 516, the 5th floor of Hans Freudenthalgebouw (the mathematics building), at Budapestlaan 6, 3584 CD Utrecht.


+31 30 253 1459 (office)
+31 6 5593 2424 (mobile)


siamak [dot] taati [at] gmail [dot] com

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Disclaimer: The content of this site is not monitored by the Utrecht University.  The responsibility of anything wrong, misleading or silly within this site goes solely back to the author.
Last Update:  January 2014