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Columbo

GPG fingerprint: B072 0742 DC33 5E0A 7E1E 6949 C706 1E5C 6886 E187 (https://keybase.io/arcoth)

Retired LAPD lieutenant and C++ aficionado. Sole recipient of the gold badge and BSI C++ member. Mail: r dot hl@gmx.net. If you're a German speaker, come join us at c-plusplus.net.

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22 Is an arbitrary number of the form xyzxyz divisible by 7, 11, 13? Oct 28 '15
12 Conditionally convergent power sums Mar 27 '16
2 How to prove this? $ \lim_{x \to 0}\frac{e^x-1}{x}=1 $ Feb 5 '15
2 Going through all Bit Strings with no 11 in it (no consecutive 1s) May 25 '14
2 Intersection of polar curve with line May 13 '15
1 Why does this cube root trick work? Feb 10 '15
1 How is this identity for Fibonacci numbers called? Jan 5 '16
1 Limit of $\frac{1}{\sqrt[n]{n!}}$ as $n$ approaches infinity Feb 11 '15
1 Prove or disprove: There exists a prime p > 3 such that p + 2 and p + 4 are also prime Apr 13 '15
1 Dot Product Question Apr 13 '15
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