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Pietro Majer

I am a professor of Mathematics at the University of Pisa, Italy.

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95 Suggestions for good notation Oct 20 '10
64 German mathematical terms like “Nullstellensatz” Apr 19 '11
51 A topologist is not a mathematician - a small question Aug 8 '14
45 The functional equation $f(f(x))=x+f(x)^2$ Dec 17 '10
41 Is the sum $\sum\limits_{j=0}^{k-1}(-1)^{j+1}(k-j)^{2k-2} \binom{2k+1}{j} \ge 0?$ Jun 23 '10
37 Why do we teach calculus students the derivative as a limit? Sep 27 '10
36 What is your favorite proof of Tychonoff's Theorem? May 30 '10
32 A counterexample for Sard's theorem in $C^1$ regularity Dec 27 '16
29 For which maps $S^1\to S^1$ is the winding number defined? Apr 12 '14
28 What is the most useful non-existing object of your field? Sep 29 '14
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