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Oltarus

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382 reputation
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visits member for 1 year, 6 months
seen May 14 at 12:43
stats profile views 16

382 reputation
 bio website visits member for 1 year, 6 months
17 badges
 location seen May 14 at 12:43
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7 Questions

views newest activity votes
 
1
vote
2
answers
228
views

Are there an infinite set of sets that only have one element in common with each other?

elementary-set-theory recreational-mathematics
jul 19 at 13:49 Oltarus 382
1
5
votes
2
answers
148
views

What is the shortest sequence that contains every permutation of $1..n$? [duplicate]

combinatorics
jun 25 at 14:06 leonbloy 12.1k
 
1
vote
1
answer
146
views

How to prove such a function doesn't exist?

functions
jul 31 at 5:37 Rajesh K Singh 1,009
 
3
votes
5
answers
418
views

Trick to find multiples mentally

elementary-number-theory arithmetic divisibility
dec 14 '11 at 12:34 J. M. 38.8k
 
4
votes
2
answers
220
views

What is $\gneq$?

inequality notation
dec 8 '11 at 17:01 Bardia 56
 
16
votes
3
answers
529
views

Why isn't a harp in a logarithmic shape?

logarithms music-theory
jan 15 at 6:18 Brian M. Scott 153k
 
6
votes
3
answers
385
views

How to solve $x\cdot\mathrm e^x=1$? [duplicate]

exponentiation
oct 28 '11 at 14:22 GarouDan 1,341
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