Sunday, June 5, 2016

modular arithmetic - How to solve this inv = -m^(-1) mod r?

Please assist me in solving this kind of modular inverses inv = -m^(-1) mod r.

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analysis - Injection, making bijection

I have injection $f \colon A \rightarrow B$ and I want to get bijection. Can I just resting codomain to $f(A)$? I know that every function i...