Stack Exchange
  • log in
  • chat
  • meta
  • about

Stack Exchange

  • All Sites
  • Hot Questions
  • Top Users
  • Newsletters
  • Blogs

Landscape

Selected questions with my answers(to be updated):

  • How to prove $\left\|\ln\left(e^{iH_1}e^{iH_2}\right)\right\|\leq\left\|H_1\right\|+\left\|H_2\right\|$?
  • Property of partial traces

Interesting unanswered questions(to be updated):

  • The set of critical value of polynomial functions
  • Osgood condition
  • Simple non-closed geodesic.
  • If $S\times\mathbb{R}$ is homeomorphic to $T\times\mathbb{R}$, and $S$ and $T$ are compact, can we conclude that $S$ and $T$ are homeomorphic?
top accounts reputation activity favorites subscriptions

Mathematics

Q&A for people studying math at any level and professionals in related fields

Joined 6 months ago, last seen today
7,700 reputation
223
badges
0 questions
180 answers

Physics

Q&A for active researchers, academics and students of physics

Joined 11 days ago, last seen 11 days ago
101 reputation
badges
0 questions
0 answers

Meta Stack Overflow

Q&A for meta-discussion of the Stack Exchange family of Q&A websites

Joined 4 days ago, last seen 4 days ago
101 reputation
badges
0 questions
0 answers

Chinese Language & Usage

Q&A for students, teachers, and linguists wanting to discuss the finer points of the Chinese language

Joined 11 days ago, last seen 11 days ago
101 reputation
badges
0 questions
0 answers

Quantitative Finance

Q&A for finance professionals and academics

Joined 1 month ago, last seen 1 month ago
101 reputation
badges
0 questions
0 answers

about blog legal privacy policy contact us feedback always welcome

site design / logo © 2013 stack exchange, inc; user contributions licensed under cc-wiki with attribution required

2013.5.15.616