Mathematics
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Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 8 years, 10 months
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  • Last seen Jan 7 at 3:04

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Top posts (120) All Questions Answers | Votes Newest

97 $\lim\limits_{n \to{+}\infty}{\sqrt[n]{n!}}$ is infinite Apr 25 '12
71 Why “characteristic zero” and not “infinite characteristic”? Jan 12 '12
47 Prove that the function$\ f(x)=\sin(x^2)$ is not uniformly continuous on the domain $\mathbb{R}$. Oct 23 '12
39 Prove that $(p+q)^m \leq p^m+q^m$ Dec 23 '12
26 Induction: $\sum_{k=0}^n \binom nk k^2 = n(1+n)2^{n-2}$ Nov 6 '12
26 Lower bound for $\phi(n)$: Is $n/5 < \phi (n) < n$ for all $n > 1$? Jan 23 '12
21 When is $\sin(x)$ rational? Dec 2 '11
19 A structural proof that $ax=xa$ forms a monoid Jan 7 '13
18 The General Validity of $ab=cd$ Implies $ba=dc$. Jun 28 '13
12 Proof that $\binom{2\phi(r)}{\phi(r)+1} \geq 2^{\phi(r)}$ Dec 30 '11
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