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for questions about sequences and series, e.g. convergence, closed form expressions, etc. Note that there is a different tag for spectral sequences, and also note that MathOverflow is not for homework. Please consider consulting the online encyclopedia for integer sequences, if you are trying to identify a given sequence that you have found in your research.
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What problem would you base your mathcoin on?
Homotopy groups of spheres. We know far too little about them!
It can be made computationally feasible by choosing finite simplicial complexes and allowing subdivision. Maps of simplicial complexes a …