Thursday, 5 July 2012

linear algebra - Uniqueness of dimension for topological vector spaces

Let V be a complete Hausdorff locally convex topological vector space over the field mathbbK.



Let B be a subset of V satisfying



.



Linearly Independent: For all functions f in mathbbKB, if displaystylesumbinBf(b)cdotb=0, then f is identically zero.



Spanning Set: For all vectors v in V, there exists a function f in mathbbKB such that displaystylesumbinBf(b)cdotb=v.



.



Let C be another subset of V satisfying the above conditions with B replaced with C.



Does it follow that |B|=|C|?



.



(I know such 'bases' don't always exist, but when they do, do they give a unique dimension?)

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