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Commutative rings, modules, ideals, homological algebra, computational aspects, invariant theory, connections to algebraic geometry and combinatorics.

6 votes

Applications of the Chinese remainder theorem

Here’s a nice problem that was among some IMO practice problems. I don’t know the source. Problem: Prove that for each natural number $n$, there is some natural number $r$ for which the $n$ intege …
darij grinberg's user avatar