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decidable AGG

decidable

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In a 2010 paper, it was shown that hyperbolic groups have a decidable marked isomorphism problem. en.wikipedia.org

It is a perfectly good theory with many good properties: it is complete, decidable, finitely axiomatizable, and so on. en.wikipedia.org

This last corollary shows the existence of decidable problems that are intractable. en.wikipedia.org

This means, in particular, the set of tautologies over a fixed finite or countable alphabet is a decidable set. en.wikipedia.org

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