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Reiner Martin

Did a Ph.D. in Pure Mathematics at UCLA many years ago, now a manager at a German financial company, enjoy solving American Mathematical Monthly and Project Euler problems.

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  • Bad Soden Taunus, Bad Soden, Germany
  • Member for 5 years, 7 months
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29 Does $\lim_{n \to \infty}a_n^{1/n} = 1$ imply $\lim_{n \to \infty} \frac{a_{n + 1}}{a_n} = 1$? Jun 30 '17
14 How to show inductively that $(2n)! > (n!)^2$ Nov 21 '17
9 Most Probable Sum by rolling $2$ dice in $[100,111]$. Aug 4 '17
9 A subgroup $H$ of $G$ must contain the identity from $G$ Jan 29 '19
8 Show that this sequence contains infinitely many composite numbers. Dec 6 '17
7 Find the determinant of a matrix ${\bf A}$ Dec 6 '17
6 Group of push-out Nov 29 '17
6 Convergence of $\sum_{n=2}^{\infty} \frac{1}{(\log 1)^p+(\log 2)^p+\cdots +(\log n)^p}$ Aug 1 '17
6 Is $d$ a metric on $X$? Mar 3 '19
5 Prove that ${n\choose m} < \frac{n^n}{(m^m )(n-m)^{n-m}}$ Nov 22 '17
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