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单词 TheoremAboutCyclicSubspaces
释义

theorem about cyclic subspaces


Let k be field, V a vector spaceMathworldPlanetmath over k, dimV=n, and T:VV a linear operatorMathworldPlanetmath. Let W be a subspacePlanetmathPlanetmathPlanetmath of V. And let v1,,vrV such that W=Z(v1,T)Z(vr,T) (see the cyclic subspace definition), and (mvi,mvj)=1 if ij, where mv denotes the minimal polynomial of v (or in other words, its annihilator polynomial). Then, Z(v1++vr,T)=Z(v1,T)Z(vr,T), and mv1++vr=mv1mvr.

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