Almost free groups and long Ehrenfeucht–
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Pauli Väisänen
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Article
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2003
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Elsevier Science
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English
⚖ 357 KB
An Abelian group G is strongly -free i G is L ∞; -equivalent to a free Abelian group i the isomorphism player has a winning strategy in an Ehrenfeucht-Fra ssà e game of length ! between G and a free Abelian group. We study possible longer Ehrenfeucht-Fra ssà e games between a nonfree group and a fre