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cs.DM2018
Quasiperiods of biinfinite Sturmian words
Florian Barbero, Guilhem Gamard, Anaël Grandjean
We study the notion of quasiperiodicity, in the sense of "coverability", for biinfinite words. All previous work about quasiperiodicity focused on right infinite words, but the pas…
cs.DM2017
Strong immersion is a well-quasi-ordering for semi-complete digraphs
Florian Barbero, Christophe Paul, Michal Pilipczuk
We prove that the strong immersion order is a well-quasi-ordering on the class of semi-complete digraphs, thereby strengthening a result of Chudnovsky and Seymour that this holds f…