Abstract
Let $R$ and $S$ be commutative complete noetherian local Gorenstein domains. If the category of finitely generated maximal Cohen-Macaulay modules over $R$ and $S$ are stably equivalent and the equivalence commutes with the first syzygy functors, then we show that the Grothendieck groups for $R$ and $S$ are isomorphic. In particular, we apply this result to hypersurface rings.
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