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-adic -basis and regular local ring
Authors:Mamoru Furuya   Hiroshi Niitsuma
Affiliation:Department of Mathematics, Meijo University, Shiogamaguchi, Tenpaku, Nagoya, 468-8502, Japan ; Faculty of Science, Science University of Tokyo, 1-3, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
Abstract:We introduce the concept of $boldsymbol{mathit{m}}$-adic $p$-basis as an extension of the concept of $p$-basis. Let $(S,boldsymbol{mathit{m}})$ be a regular local ring of prime characteristic $p$ and $R$ a ring such that $S supset R supset S^p$. Then we prove that $R$ is a regular local ring if and only if there exists an $boldsymbol{mathit{m}}$-adic $p$-basis of $S/R$ and $R$ is Noetherian.

Keywords:$boldsymbol{mathit{m}}$-adic $p$-basis   regular local ring
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