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Mathematics
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Top posts (98) All Questions Answers | Votes Newest

15 Numbers having in decimal representation no common digits with all their proper divisors May 21 '15
15 Is it true that this function $f(n)=n^{13}$? Jun 7 '15
15 Finding the largest equilateral triangle inside a given triangle Aug 4 '17
14 What are the units in $\mathbb{Z}[\root 3 \of 2]$? Jun 1 '16
10 Find all primes $p,q$ such that $p^3+p=q^7+q$ May 11 '17
9 When two projections in a C*-algebra are “almost” Murray-von Neumann equivalent, they are equivalent Apr 27 '15
8 Equality by iteratively applying $(a,b)\rightarrow [(a+1,2b)\text{ or }(2a,b+1)]$? Apr 22 '15
8 How prove this inequality $(a+b)^rb^{2n-r}\le\dfrac{n}{4}+r,$ Jun 19 '17
8 Does this system of simultaneous Pell-like equations have any non-trivial positive integer solutions? Apr 21 '16
8 Which string can't be accessed? Sep 28 '17
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