Mathematics
Profile Activity
Meta user
Network profile
4,214
reputation
1
15
38

JZS

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

15
answers
141
questions
~66k
people reached
  • Member for 8 years, 7 months
  • 459 profile views
  • Last seen Aug 1 at 1:30

Communities (4)

Top network posts

We respect a laser-like focus on one topic.

Top tags (91)

Score 15
Posts 40
Posts % 26
Score 6
Posts 29
Score 3
Posts 41
Score 3
Posts 15
Score 1
Posts 17
Score 0
Posts 14
View all tags →

Top posts (156)

All Questions Answers
Votes Newest
35 Show that a proper continuous map from $X$ to locally compact $Y$ is closed Sep 22 '13
13 Finding $\displaystyle \lim_{n \to \infty} \int_0^\infty \frac{e^{-x}\cos{x}}{nx^2 + \frac{1}{n}}dx$ Jan 5 '13
12 Determine $\lim\limits_{n \to \infty}{{n} \choose {\frac{n}{2}}}\frac{1}{2^n}$, where each $n$ is even Jan 28 '13
11 Cauchy sequences - can we control the rate at which elements “get closer”? Jul 24 '14
10 For $f$ entire and $\{f(kz) : k \in \mathbb{C}\}$ a normal family, prove that $f$ is a polynomial. Jun 17 '13
9 Approximation of a harmonic function on the unit disc by harmonic polynomials. Jun 12 '13
8 For a Hilbert space $\mathcal{H}$, is every bounded linear operator on $\mathcal{H}$ a linear combination of unitary operators? Aug 14 '14
8 Give an example of two closed sets $A, B \subseteq \mathbb{R}$ such that the set $A + B $ is not closed [duplicate] Dec 30 '12
7 Prove that $\sum_{k=1} ^ n k^{-1} = \ln(n) + O(1)$ Mar 10 '13
7 Show that analytic function $f$ cannot be conformal when $f'(z) = 0$ Mar 24 '13
View all questions and answers →

Badges (54)

Gold

1

Rarest

Silver

15

Rarest

Bronze

38

Rarest

View all badges →

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.