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Netchaiev's user avatar
Netchaiev's user avatar
Netchaiev
  • Member for 4 years, 11 months
  • Last seen more than a month ago
291 votes

Why does this innovative method of subtraction from a third grader always work?

24 votes
Accepted

Real Analysis. Suggestions.

16 votes

Difficulties in stating mean value theorem for functions which are not continuous on a closed interval.

15 votes

Representing zero as a rational number

6 votes
Accepted

A map is continuous if and only if the restrictions are

5 votes
Accepted

Operation cost of a lower triangular matrix

5 votes
Accepted

When does the inequality change in probability problems and why does it?

5 votes

Are the sets $\{(x, y): x^2 + y^2 < 1\}$ and $\{(x, y): 0 < x^2 + y^2 < 1\}$ homeomorphic?

5 votes
Accepted

brownian motion and stochastic calculus - Karatzas& Shreve : 1.3 definition, page 2.

5 votes
Accepted

Equivalence of Two Norm and Infinity Norm

4 votes
Accepted

I can't find the other two solutions to this equation.

4 votes
Accepted

Nullity and rank bounds for a nilpotent matrix

4 votes
Accepted

Estimate the $L^1$-norm of the Fourier transform

4 votes

Evaluation of $\lim_{n \to \infty} \int_{0}^\infty \frac{1}{1+x^n} dx$

4 votes
Accepted

Problem in finding the value of this limit

4 votes
Accepted

Showing $\sup A\ge 2$

4 votes
Accepted

Integral of $L1$ function against compactly supported smooth function:

3 votes
Accepted

Question about the supremum of a set

3 votes
Accepted

Integral limit $\lim _{t\to 0}\frac 1 t \int_0^1 (f(x+t)-f(x))x \, dx$

3 votes
Accepted

If $f>0$ when does $\int_{a}^{\infty} f(x)dx$ converge/diverge?

3 votes

Marginal p.m.f. of two random variables with joint p.m.f. $p(x,y) = 2^{-x-y}$

3 votes

Prove $|f(x) -f(y)| \le 1 \ \forall x,y$

3 votes

Is this probability positive?

3 votes

Value of $S_{10}+I_{10}$

3 votes
Accepted

$E = \mathbb{R}\times e$ is a n-dimensional measure zero if $e \subset \mathbb{R}^{n-1}$ of (n-1) dimensional measure zero

3 votes
Accepted

Behaviour of the sum $\sum\limits_{k\ge1}\frac{\log(t+k)}{k^2}$

3 votes

Norm of $\phi(f) = \int_{\frac{1}{4}}^{\frac{3}{4}}3\sqrt 2 f d\mu $

2 votes

Why is the set $A=\{f\in F:f(0)=0\}$ an ideal where $F=\{f|f:[-1,1]\to \mathbb{R}\}$?

2 votes
Accepted

supremum of two sets

2 votes
Accepted

When does $|f(x)-L| = 0$?