H LK(A+B) (A+ B)x min max O1…,0n-kx≠(0, H ⊥O1 k XAx x Bx min max x≠0 H H 01,…,0n-k ⊥1,…,0 H Ax ≥min max x≠0 .+n(B) n-k x⊥O1,,Cn2-k nK(A)+mn(B返回 x x x A B x A B H H x x k n k n k ( ) ( ) min max , , , , 0, 1 1 + + = − − ⊥                 = + − − ⊥  x x x B x x x x A x H H H H x x n k n k     , , , , 0, 1 1 min max            + − − ⊥  min max ( ) , , , , 0, 1 1 B x x x A x H n H x x n k n k        (A) (B) = k + n