that means you donnot understand algebra
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送交者: BerkeleyWolf 于 2007-02-16, 01:37:05:
回答: it is simple, but you may have forgotten what "秩" is, 由 008 于 2007-02-16, 01:30:17:
Matrix is space.
Matrix is linear operator.
I learn this from Alan Weinstein.
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