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Binary intersection formalized

06/30/2020
by   Štěpán Holub, et al.
Czech Technical University in Prague
Charles University in Prague
0

We provide a reformulation and a formalization of the classical result by Juhani Karhumäki characterizing intersections of two languages of the form {x,y}^*∩{u,v}^*. We use the terminology of morphisms which allows to formulate the result in a shorter and more transparent way, and we formalize the result in the proof assistant Isabelle/HOL.

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