Matthieu Rosenfeld

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I am currently a postdoc researcher at LIMOS. My current topic of research is enumeration on graphs. My research interests are combinatorics and theoretical computer science.


I did my PhD thesis under the direction of Michaël Rao at the LIP. I worked on the avoidability of substructures in words. In particular, I studied the avoidability of patterns and powers in the usual, the abelian or the additive sens.

One example of such a result is: There exists an infinite sequence over a finite subset of ℤ2 that does not contain two consecutive factors of same size and same sum. It is still open whether it is also possible over a finite subset of ℤ or not (Note that Szemerédi's theorem implies that it is not possible without the "same size" condition).


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