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Commutative subalgebras of $M_n$M_n |
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commutative Commutative subalgebras of $M_n$ |
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For a given $n$, is there any characterization for the commutative subalgebras of $M_n(\Bbb{C})$? I would like to know how many commutative subalgebras there are for each possible dimension. In view of Chapman's answer, I am refining my previous question: Given $k\leq n$, is there any way of describing the commutative subalgebras of $M_n$ which are of dimension $k$. |
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