Mathematics
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All Questions Answers
Score Newest
answer
110
$\lim\limits_{n \to{+}\infty}{\sqrt[n]{n!}}$ is infinite
Apr 25, 2012
answer
85
Why “characteristic zero” and not “infinite characteristic”?
Jan 12, 2012
answer
58
Prove that the function$\ f(x)=\sin(x^2)$ is not uniformly continuous on the domain $\mathbb{R}$.
Oct 23, 2012
answer
55
Prove that $(p+q)^m \leq p^m+q^m$
Dec 23, 2012
answer
29
Induction: $\sum_{k=0}^n \binom nk k^2 = n(1+n)2^{n-2}$
Nov 6, 2012
answer
29
Lower bound for $\phi(n)$: Is $n/5 < \phi (n) < n$ for all $n > 1$?
Jan 23, 2012
answer
25
When is $\sin(x)$ rational?
Dec 2, 2011
question
19
A structural proof that $ax=xa$ forms a monoid
Jan 7, 2013
answer
18
The General Validity of $ab=cd$ Implies $ba=dc$.
Jun 28, 2013
question
14
Are ideals in rings and lattices related?
Jan 9, 2012
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628
Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k are missing
124
Find the 2nd largest element in an array with minimum number of comparisons
80
Is Haskell truly pure (is any language that deals with input and output outside the system)?
73
What does data ... where mean in Haskell?
71
null instead of ==

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