Mathematics
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Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 6 years, 2 months
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Top posts (1,537) All Questions Answers | Votes Newest

208 How to find a general sum formula for the series: 5+55+555+5555+…? Nov 16 '14
62 'Obvious' theorems that are actually false Jun 5 '14
59 'Obvious' theorems that are actually false Jun 5 '14
52 How to find the mod of this large number Dec 13 '16
47 Can $18$ consecutive integers be separated into two groups,such that their product is equal? Jan 15 '14
42 A simple finite combinatorial sum I found, that seems to work, would have good reasons to work, but I can't find in the literature. Dec 6 '18
41 $\mathbb{R}$ with the lower limit topology is not second-countable Feb 6 '15
30 Is this graph a planar graph or not? Oct 17 '17
30 If $\lvert\operatorname{Hom}(H,G_1)\rvert = \lvert\operatorname{Hom}(H,G_2)\rvert$ for any $H$ then $G_1 \cong G_2$ Dec 22 '13
29 Given a convergent series of positive rationals, how many subseries can converge to the same number? Dec 6 '17
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