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Jun 13, 2020 · Is there a formal proof for $(-1) \\times (-1) = 1$? Its a fundamental formula not only in arithmetic but also in the whole of math. Is there a proof for it or is .May 11, 2015 · There are multiple ways of writing out a given complex number, or a number in general. Usually we reduce things to the "simplest" terms for display -- saying $0$ is!Intending on marking as accepted, because Im no mathematician and this response makes sense to a commoner. However, Im still curious why there is 1 way to permute 0 things, …