Let V be a finite dimensional vector space over field F and let v belong to V,v not equal to 0.Then there exists some f in V* such that f(v) is not equal to 0.

(where V* is dual space of V)

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- Jan 1st 2010, 03:03 AMmath.djLinear functionals
Let V be a finite dimensional vector space over field F and let v belong to V,v not equal to 0.Then there exists some f in V* such that f(v) is not equal to 0.

(where V* is dual space of V) - Jan 1st 2010, 04:15 AMOpalg
- Jan 1st 2010, 11:09 AMRoam
f is a mapping , isn't it? It is termed a linear functional if it's a linear mapping from V into F.

If is a basis of Vover F, let be the linear functionals defined by Kronecker delta notation:

Then set is a basis for . Anf those linear functionals f_i are unique since they're defined on a basis of V.