Talk:Linear Algebra/Strings

Theorem 2.13 proof
There seems to be a flaw in theorem http://en.wikibooks.org/wiki/Linear_Algebra/Strings#th:NilMapHasStrBas.

$$ B\!\mathbin{{}^\frown}\!\hat{C} $$ can't be possibly a basis for $$ \mathcal{R}(t)+\mathcal{N}(t) $$ as it has the vectors $$ t^{h_1}(\vec{\beta}_1),\dots,t^{h_i}(\vec{\beta}_i) $$ twice (once from $$ B\ $$ and once from $$ \hat{C}\ $$). Wisapi (discuss • contribs) 17:52, 3 August 2011 (UTC)