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Mathematics
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sdcvvc
  • Member for 14 years, 10 months
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Top posts

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125
$\lim\limits_{n \to{+}\infty}{\sqrt[n]{n!}}$ is infinite
Apr 25, 2012
96
Why “characteristic zero” and not “infinite characteristic”?
Jan 12, 2012
68
Prove that the function$\ f(x)=\sin(x^2)$ is not uniformly continuous on the domain $\mathbb{R}$.
Oct 23, 2012
66
Prove that $(p+q)^m \leq p^m+q^m$
Dec 23, 2012
30
Induction: $\sum_{k=0}^n \binom nk k^2 = n(1+n)2^{n-2}$
Nov 6, 2012
30
Lower bound for $\phi(n)$: Is $n/5 < \phi (n) < n$ for all $n > 1$?
Jan 23, 2012
25
When is $\sin(x)$ rational?
Dec 2, 2011
19
Are ideals in rings and lattices related?
Jan 9, 2012
19
A structural proof that $ax=xa$ forms a monoid
Jan 7, 2013
18
The General Validity of $ab=cd$ Implies $ba=dc$.
Jun 28, 2013

Top network posts

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646
Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k are missing
126
Find the 2nd largest element in an array with minimum number of comparisons
83
Is Haskell truly pure (is any language that deals with input and output outside the system)?
75
What does data ... where mean in Haskell?
72
null instead of ==