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{\Large Department of Mathematics, BGU}

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{\Huge BGU Probability and Ergodic Theory  (PET) seminar}\\[0.2\baselineskip]

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\textbf{On} \emph{Tuesday, March 27, 2018}
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\textbf{At} \emph{11:10 -- 12:00}
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\textbf{In} \emph{201}

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{\large\scshape Jeremias Epperlein 
  %
  (BGU)
}
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will talk about
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{\Large\bfseries Derivative Algebras and Topological Conjugacies Between Cellular Automata\par}
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\textsc{Abstract:}
Topologial conjugacy is most probably the most natural notion of
isomorphism for topological dynamical systems. Classifying subshifts
of finite type up to topological conjugacy is a notoriously hard
problem with a long history of results. Much less is known about the
corresponding problem for
endomorphisms of subshifts of finite type (aka cellular automata).
I will discuss necessary and sufficient criteria under which periodic
cellular automata are topologically conjugate.
The main tool will be derivative algebras in the sense of Tarski and
McKinsey, an algebraic
structure based on the Cantor-Bendixson derivative.





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{\bfseries Please Note the Unusual Time!}
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