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This tag is used if a reference is needed in a paper or textbook on a specific result.

5 votes
1 answer
135 views

Reference for higher order Campanato Lemmas, e.g. `Sufficiently fast L^2 decay on balls to a...

Whence can I reference the following fact (I have seen it quoted as `standard' in respectable places, so I hope it is so)?: Let $f : B_2(0) \to \mathbb{R}$, say $f \in L^2(B_2(0))$ . Suppose that the …
Spencer's user avatar
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11 votes

Learning roadmap for harmonic analysis

To my mind, the classical subject is quite different from the modern, evolved form of the subject I started on the classical side with Yitzhak Katznelson's An Introduction to Harmonic Analysis: This …
55 votes
17 answers
16k views

Computer science for mathematicians

This is a big-list community question, so I'm sorry in advance if it is deemed too soft but I haven't seen anything similar yet. I've seen computer scientists post questions looking to learn things …
5 votes
Accepted

Expressing any f(x,y) using only addition and unary functions?

This is "due in successively more exact forms to Kolmogorov, Arnol'd and a succession of mathematicians ending with Kahane", to quote T.W. Korner on the subject. I am informed that the proof I met is …
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