4、转置AuA12AA21A22A设分块矩阵 A=则As1AAstAlAzA's1A2A'A's24V:AAA'84.5矩阵的分块§4.5 矩阵的分块 11 21 1 12 22 2 1 2 . s s t t st A A A A A A A A A A              =          设分块矩阵 11 12 1 21 22 2 1 2 , t t s s st A A A A A A A A A A       =       则 4、转置