glebovg

2,303 reputation

1424

bio	website	math.stackexchange.com/users/…
	location	Moscow, Russia
	age	23
visits	member for	10 months
	seen	May 20 at 4:05
stats	profile views	517

The riddle does not exist. If a question can be put at all, then it can also be answered.

Wittgenstein, Ludwig

	2,303 reputation	bio	website	math.stackexchange.com/users/…	visits	member for	10 months
1424 badges		location	Moscow, Russia		seen	May 20 at 4:05

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44 Favorites

added views newest activity votes

131

votes

answers

kviews

Different methods to compute $\sum\limits_{n=1}^\infty \frac{1}{n^2}$

mar 8 at 13:57 xpaul 1

votes

answers

943

views

Triangular Factorials

number-theory diophantine-equations

nov 23 at 19:53 zyx 11k

votes

answers

kviews

How can I evaluate $\sum_{n=0}^\infty (n+1)x^n$

homework sequences-and-series

apr 24 at 18:56 glebovg 2,303

votes

answers

433

views

Why can't $\sqrt{2}^{\sqrt{2}{^\sqrt{2}{^\cdots}}}>2$?

sequences-and-series analysis limit convergence

nov 9 at 4:56 Oleg567 756

votes

answers

kviews

What are the practical applications of the Taylor Series?

calculus taylor-expansion

dec 19 at 16:34 B0112358 171

votes

answers

973

views

Proof for exact differential equations shortcut?

calculus differential-equations proof-strategy

feb 28 at 18:41 Mhenni Benghorbal 14.1k

votes

answers

589

views

How to Improve Mathematical Thinking and General Problem Solving Skills?

soft-question problem-solving learning

nov 2 at 1:40 Makoto Kato 11.3k

votes

answer

125

views

Ratio of time reading and solving

soft-question

oct 27 at 22:40 glebovg 2,303

votes

answers

121

views

Prove identity concerning successive derivative of $e^{x^2/2a}$

calculus derivatives

nov 26 at 23:00 draks ... 6,328

votes

answers

220

views

Series as an integral (sophomore's dream)

homework sequences-and-series integral

jan 9 at 15:39 Ars gratia artis 497

votes

answers

146

views

Proving equality with $\gcd$'s

elementary-number-theory

feb 8 at 23:19 Community♦ 1

votes

answers

443

views

Is $0^0=1$ postulate independent of all other axioms of complex numbers?

complex-numbers arithmetic exponentiation

nov 4 at 20:54 Hagen von Eitzen 42.5k

votes

answer

views

Proof of existence of the number of solutions

reference-request soft-question education

nov 20 at 0:43 glebovg 2,303

votes

answers

237

views

What's the difference between a negation and a contrapositive?

logic discrete-mathematics

nov 5 at 3:32 amWhy 54.7k

votes

answer

320

views

Relationship between Legendre polynomials and Legendre functions of the second kind

homework differential-equations special-functions

oct 28 at 4:50 J. M. 38.9k

votes

answers

271

views

Use a linear approximation (or differentials) to estimate the given number.

homework calculus

oct 27 at 23:01 glebovg 2,303

votes

answer

175

views

Showing $\int_{0}^{\infty} \frac{\sin{x}}{x} \ dx = \frac{\pi}{2}$ using complex integration

complex-analysis analysis integral integration

apr 5 at 22:13 glebovg 2,303

votes

answers

views

Is there any book / tutorial where i can get the summary of all engineering math stuff

reference-request computer-science

oct 26 at 2:45 glebovg 2,303

votes

answers

233

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Partial sum of an alternating series: $2 - \frac{4}{3} + \frac{8}{9} - \cdots + \frac{(-1)^{20}2^{21}}{3^{20}}$

calculus sequences-and-series summation

dec 25 at 10:45 glebovg 2,303

votes

answer

100

views

Negation of a quantified statement

logic quantifiers predicate-logic

jan 22 at 13:50 Peter Smith 11.6k

votes

answers

102

views

Prove summation formula for binomial coefficients

probability combinatorics binomial-coefficients

dec 10 at 21:02 glebovg 2,303

votes

answers

views

Dirac delta equality

integral functions

nov 13 at 17:27 glebovg 2,303

votes

answer

views

How to show how primorials grow asymptotically?

number-theory asymptotics

nov 18 at 3:02 Jeff Tolliver 341

votes

answer

126

views

When does a higher order polynomial have complex roots?

complex-analysis matrices polynomials

oct 24 at 21:07 glebovg 2,303

votes

answers

238

views

Why is $\lim\limits_{x \rightarrow \infty}x-\ln{(1+e^x)} = 0$?

calculus limit

oct 22 at 2:05 Peter Tamaroff 25.8k

votes

answer

views

The number of initial conditions of Cauchy problem for PDE

pde

oct 20 at 20:17 glebovg 2,303

votes

answers

808

views

Showing $\frac{\sin x}{x}$ is NOT Lebesgue Integrable on $\mathbb{R}_{\ge 0}$

measure-theory

oct 31 at 4:51 leo 2,695

votes

answer

107

views

How to calculate the residues of $\frac{\pi \cot(\pi z)}{1+z^2}$ at poles $i, -i, 0$

complex-analysis integral residue-calculus

nov 2 at 3:57 Michael Hardy 48.2k

votes

answer

100

views

Branch of Mathematics correlating with Physics

reference-request mathematical-physics

nov 9 at 1:58 glebovg 2,303

vote

answers

views

Sum of four numbers less than a particular value

combinatorics permutations

nov 10 at 0:32 pi37 116