On the formula \(j(M)+d(M)=2n\) over the rings \(D_ n\) \((\widehat {D}_ n)\) and \({\mathcal E}_ P\)

zbMath0798.13012MaRDI QIDQ1318866

Quan Shui Wu

Publication date: 26 April 1994

Published in: Science in China. Series A (Search for Journal in Brave)

zbMATH Keywords

grademultiplicitydimensionassociated graded ringgood filtrationsoperators on formal power seriesring of differential operators on convergent complex power seriesring of germs of microlocal differential operators

Mathematics Subject Classification ID

Valuations, completions, formal power series and related constructions (associative rings and algebras) (16W60) Sheaves of differential operators and their modules, (D)-modules (32C38) Commutative rings of differential operators and their modules (13N10) Formal power series rings (13F25)

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