Titlebook: Elektrische Kontakte / Electric Contacts Handbook; Ragnar Holm Book 1958Latest edition Springer-Verlag Berlin Heidelberg 1958 Anode.Elektr

Concerto

Decision Problems,to derive them from the Post correspondence problem (PCP) or the word problem for groups or semigroups. Unfortunately, many of the problems we encounter with reduction systems turn out to be undecidable, even when we take STSs, for instance, the innocent looking question of minimality of a string.

BLAND

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