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Approximation front page
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[QUICK DESCRIPTION] There are many circumstances in mathematics in which one has an object of one kind and one would like to approximate it by an object of a different kind, or a more specific kind. It is not clear that any single piece of advice applies to all such circumstances, so this article contains links to articles about more specific kinds of approximation. If the number of links in this page gets too big, then a new level in the hierarchy will be needed. [[Polynomial approximation front page|Approximating functions by polynomials]] [[Approximating functions by better behaved functions]] [[To prove abstractly that a function of one kind can be approximated by a function of another, try the Hahn-Banach theorem]] [[Approximating real numbers by rational numbers]] [[Approximating continuous structures by discrete structures]]
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