[理工] 線代
Suppose that V and W are finite-dimensional vector space and that U is a subspace of V. Then there exists a linear transformation T from V to W such that null(T)=U if and only if dim(U)>=dim(V) -dim(W)
這敘述是對的,可是我怎麼想都想不通怎麼導出這式子 囧
另外,矩陣可以正交對角化其實就是可以對角化,然後也會有n個相異的eigenvector
只是他的P是orthogonal 對吧?!
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