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Approximation theory is concerned with how functions can best be approximated with simpler functions, and with quantitatively characterizing the errors introduced thereby.

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A senseful meaning of 'approximation of manifolds'?

A senseful meaning of ‘approximation of manifolds’? A simply-looking meaning is the one of Gromov-Hausdorff, as mentioned by Ryan Budney. It has many cool applications, but none that I'm aware of ar …
Sergey Melikhov's user avatar