Did

102,262 reputation

1074180

bio	website
	location
	age
visits	member for	2 years, 3 months
	seen	5 hours ago
stats	profile views	14,296

As somebody used to say:

Does research. Smokes. Battles administration. Smokes. Wishes he could stop battling administration so that he could have more time to do research. Smokes some more.

The same. Except I do not smoke.

	102,262 reputation	bio	website		visits	member for	2 years, 3 months
1074180 badges		location			seen	5 hours ago

summary answers questions tags badges favorites bounties reputation activity

3,027 Answers

newest activity votes

closed form for some trigonometric sums

Help to find finite sum

Difference between logarithm of an expectation value and expectation value of a logarithm

How can I find the value of $a^n+b^n$, given the value of $a+b$, $ab$, and $n$?

A problem of evaluating an integral

Find $\lim_{x \to\infty}\frac{{(1+1/x)}^{x^2}}{2e^x}$ with all passages

proof that $e^x$ is a transcendental function of $x$?

What will be the value of $P(12)+P(-8)$ if $P(x)=x^{4}+ax^{3}+bx^{2}+cx+d$?

How to prove that $\int_0^1\left(\sum_{k=n}^\infty {x^k\over k}\right)^2\,dx = \int_0^1 2x^{n-1}\log\left(1+{1\over\sqrt{x}}\right)\,dx.$

Simplest proof that $\zeta(s) \to \infty$ as $s \to 1$?

Is $\sin^3 x=\frac{3}{4}\sin x - \frac{1}{4}\sin 3x$?

Is this matrix obviously positive definite?

How to prove that $\sum\limits_{i=0}^p (-1)^{p-i} {p \choose i} i^j$ is $0$ for $j < p$ and $p!$ for $j = p$

Difficult integral

Continuity of the metric function

Sum and product of Martingale processes

Divergent series of positive numbers

Prove/disprove: if $\det(A+X) = \det(B + X)$ for all $X$, then $A=B$

Find $\lim_{n\to\infty}n\sqrt[n]{a_{1}a_{2}\cdots a_{n}}$ given the sum converges

How can I explain topology to my grandmother?

What is your definition for neighborhood in topology?

Evaluating this determinant

Theorems with an extraordinary exception or a small number of sporadic exceptions

Question involving the Gamma function

Solving a difficult recursion via generating functions

Smallest open set in $\mathbb{R}$ that is supset of $\mathbb{Q}$

How can I evaluate the integral of $\exp(-x^2-1/x^2)dx$ from 0 to infinity?

Continuity of $\delta$ in the definition of continuity

Product of two Lebesgue integrable functions not Lebesgue integrable

Equivalence of Dirichlet density and asymptotic density