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UID:8143@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20150310T110000
DTEND;TZID=Europe/Paris:20150310T120000
DTSTAMP:20241120T210043Z
URL:https://www.i2m.univ-amu.fr/evenements/hierarchy-and-expansiveness-in-
 2d-subshifts-of-finite-type/
SUMMARY:Charalampos Zinoviadis (I2M\, Aix-Marseille Université): Hierarchy
  and expansiveness in 2D subshifts of finite type
DESCRIPTION:Charalampos Zinoviadis: In a 2D subshift of finite type (SFT)\,
  a direction l is called expansive if every point is uniquely determined b
 y its contents along a finite strip of slope l.\nWe are interested in dyna
 mical and computational properties of 2D subshifts of finite type with a u
 nique direction of non-expansiveness (extremely deterministic). We prove\,
  among other things\, that the non-emptiness problem of extremely expansiv
 e 2D SFT is undecidable. The proofs and constructions are based on the not
 ion of simulation and self-simulation\, which was first used by Gacs and l
 ater by Durand\, Romaschenko and Shen. In this talk\, we are going to stat
 e the results and try to give a basic intuitive idea of the specific probl
 ems that arise when we try to construct extremely deterministic 2D SFT.\n\
 nhttps://arxiv.org/abs/1603.05464\n&nbsp\;
ATTACH;FMTTYPE=image/jpeg:https://www.i2m.univ-amu.fr/wp-content/uploads/2
 020/01/Charalampos_Zinoviadis.jpg
CATEGORIES:Séminaire,Ernest
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DTSTART:20141026T020000
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