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History and philosophy of mathematics, biographies of mathematicians, mathematics education, recreational mathematics, communication of mathematics.
13
votes
Accepted
History of publication of von Neumann's characterization of orthogonally invariant matrix norms
Probably there is no way to know it for certain, but it's a safe bet that this was related to Fritz Noether https://en.wikipedia.org/wiki/Fritz_Noether . He was a brother of Emmy Noether and also a …
30
votes
"Long-standing conjectures in analysis ... often turn out to be false"
The Riemann hypothesis is a conjecture in both analysis and number theory. Someone who tries to undermine it necessarily has to ignore the latter part or to declare it irrelevant. I am not suggesting …