Skip to main content
MathOverflow
Qingping Zeng's user avatar
Qingping Zeng's user avatar
Qingping Zeng's user avatar
Qingping Zeng
  • Member for 13 years, 3 months
  • Last seen more than a month ago
Profile Activity
Stats
515
reputation
4k
reached
1
answer
8
questions
Communities
About
Functional Analysis
Badges
View all badges
This user doesn’t have any gold badges yet.
2
silver badges
8
bronze badges
Top tags
0
Score
8
Posts
89
Posts %
0
Score
4
Posts
44
Posts %
0
Score
3
Posts
33
Posts %
0
Score
2
Posts
22
Posts %
0
Score
1
Posts
11
Posts %
Top posts
question
13
Does $X$ embed in $Y$, and $Y$ embed in $X$, always imply that $X$ isomorphic onto $Y$?
Jun 16, 2012
question
9
Fredholm theory on Fr\'echet spaces
Nov 19, 2012
question
7
Does a Banach algebra version of "the sum of a closed subspace and a finite dimensional subspace is always closed" exist?
Jul 17
question
6
What is the intersection of the closures of left invertible operators and right invertible operators?
Jun 17, 2012
question
2
Hereditarily indecomposable Banach spaces and Separable Quotient problem
Aug 31, 2011
question
2
On isolated points of the approximate point spectrum of a bounded operator
Apr 29, 2015
question
1
What is the socle of the $2\times 2$ matrix algebra over a Banach algebra?
Sep 29, 2023
question
0
Weak star separable and separable quotient problem
Oct 25, 2011
answer
0
A separable Banach space and a non-separable Banach space having the same dual space?
Oct 25, 2011