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单词 Jmultiplicity
释义

j-multiplicity


Let (R,𝔪) be a NoetherianPlanetmathPlanetmathPlanetmath local ringMathworldPlanetmath with proper idealMathworldPlanetmathPlanetmath I. Define

j(I)=limn(d-1)!nd-1lengthR(H𝔪0(In/In+1))

and call it the j-multiplicity of I. Here H𝔪0() is the 0-th local cohomology functor. When I is 𝔪-primary, it is same as the Hilbert-Samuel multiplicity eI(R).

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