Let n,α∈N,β∈N0, and let p be odd prime number s.t. pβ|n.
How do we prove that p^{\alpha+\beta+1}|{n\choose k}p^{k\alpha} for every k\in\{1,2,\ldots,n-1\}?
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...
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