3 results
Thomas Colcombet.
The theory of regular cost functions is a quantitative extension to the classical notion of regularity. A cost function associates to each input a non-negative integer value (or infinity), as opposed to languages which only associate to each input the two values "inside" and "outside". This theory […]
Published on August 13, 2013
Gabriele Puppis ; Thomas Colcombet ; Clemens Ley.
The notion of orbit finite data monoid was recently introduced by Bojanczyk as an algebraic object for defining recognizable languages of data words. Following Buchi's approach, we introduce a variant of monadic second-order logic with data equality tests that captures precisely the data languages […]
Published on September 17, 2015
Thomas Colcombet ; Nathanaël Fijalkow ; Florian Horn.
We consider two-player games over graphs and give tight bounds on the memory size of strategies ensuring safety objectives. More specifically, we show that the minimal number of memory states of a strategy ensuring a safety objective is given by the size of the maximal antichain of left quotients […]
Published on January 29, 2024