TonyK
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### Answers (802)

 81 Show that a generalized knight can return to its original position only after an even number of moves 53 How does a non-mathematician go about publishing a proof in a way that ensures it to be up to the mathematical community's standards? 52 An easy example of a non-constructive proof without an obvious “fix”? 47 Are we guaranteed that the harmonic series minus infinite random terms always converge? 46 How many non-differentiable functions exist?

### Reputation (33,065)

 +10 Are we guaranteed that the harmonic series minus infinite random terms always converge? +25 Is $2\prod_{i=1}^{n}{p_i} - \prod_{i=1}^{n}{(p_i + 1)} - \prod_{i=1}^{n}{(p_i - 1)}$ even and negative for $n > 1$? +10 Formal Proof that area of a rectangle is $ab$ +10 powers of 2 in base 3

### Questions (3)

 4 Smallest area of polygon with $n$ sides all of length $1$ 3 Given integers $(a_i)$, what's the smallest $k$ for which the $a_i$ are distinct mod $k$? 2 Maximum order of permutation of $n$ elements [duplicate]

### Tags (278)

 270 geometry × 73 172 algebra-precalculus × 55 268 combinatorics × 65 171 sequences-and-series × 32 233 elementary-number-theory × 54 170 probability × 63 225 number-theory × 60 164 real-analysis × 54 185 calculus × 64 140 soft-question × 14

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 functions Enlightened × 7 Nice Answer × 59 Revival × 4 Populist × 2 Yearling × 5 Good Answer × 13 real-analysis Guru Informed

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### Votes Cast (1,521)

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