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PolyaPal

Retired...interested in classical analysis, number theory, linear algebra, inequalities...math journal problem column addict...New York Times Crossword every day

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  • Last seen Jan 30 at 15:43

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32 What is the most unusual proof you know that $\sqrt{2}$ is irrational? Jun 10 '15
5 Prove or disprove $\lim\limits_{n \to \infty} (p_{n+1} - p_{n})/\sqrt{p_n} = 0$ Jul 23 '12
5 When to give up on a hard math problem? Jun 11 '14
4 If both $a,b>0$, then $a^ab^b \ge a^bb^a$ Dec 16 '14
3 Does $\det(A + B) = \det(A) + \det(B)$ hold? Oct 7 '15
2 Is there a branch of Mathematics which connects Calculus and Discrete Math / Number Theory? Jan 5 '16
2 What isn't a vector space? Oct 3 '17
2 What is an odd prime? Mar 11 '15
2 Prove that the $p$-mean is an increasing function of $p$ Jun 17 '14
2 Limit of sum with binomial coefficient Jun 26 '12
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