Question:
is (A x B) = -(B x A) ??
Answer:
No not at all.
AXB and BXA both are a cartesian product where, order is very important.
AXB = BXA is possible only if A = B.
But, AXB = - BXA is not possible. As, this implies A = -B and B = A, which is contradictory.
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