Extensions through codimension one to sense preserving mappings
نویسندگان
چکیده
منابع مشابه
Codimension, Multiplicity and Integral Extensions
Let A ⊂ B be a homogeneous inclusion of standard graded algebras with A0 = B0. To relate properties of A and B we intermediate with another algebra, the associated graded ring G = grA1B(B). We give criteria as to when the extension A ⊂ B is integral or birational in terms of the codimension of certain modules associated to G. We also introduce a series of multiplicities associated to the extens...
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ژورنال
عنوان ژورنال: Annales de l’institut Fourier
سال: 1973
ISSN: 0373-0956
DOI: 10.5802/aif.469