839 reputation
518
bio website
location Germany
age 26
visits member for 3 years, 7 months
seen Sep 19 at 17:17

Jul
2
awarded  Curious
Jun
12
answered K-theory computation for algebra of bounded continuous functions on $[0,\infty)$
Jun
12
answered Roe algebra of a countably infinite set of points
Apr
28
accepted Does completing a normed space commute with taking quotients?
Apr
27
comment Does completing a normed space commute with taking quotients?
Thanks! One remaining question: why is the map $\overline{X / Y} \to \overline{X} / \overline{Y}$ surjective?
Apr
27
asked Does completing a normed space commute with taking quotients?
Apr
24
awarded  Citizen Patrol
Apr
12
awarded  Custodian
Apr
12
revised Index of summation shift
improved formatting
Apr
12
reviewed Reviewed Index of summation shift
Apr
12
suggested suggested edit on Index of summation shift
Feb
15
awarded  Yearling
Feb
3
comment When do weak and original topology coincide?
Posted my question at MO so that any possible answer does not get lost in the comments: mathoverflow.net/q/156538/13356
Jan
31
reviewed Reviewed Distance from curve to plane
Jan
31
comment When do weak and original topology coincide?
@MartinSleziak: There aren't any examples of such spaces in Morris' paper. Do you know one?
Jan
30
asked $T: H^{-\infty}(R^n) \to H^\infty(R^n)$ continuous iff $T: H^{-r}(R^n) \to H^s(R^n)$ bounded for all $r,s>0$?
Dec
11
comment Compact subsets of $c_0$
Thanks, the argument via Dini's theorem is nice. But I think one can get this direction directly by contradiction: if the final condition is not satisfied, we take a sequence (of sequences) that witnesses this and then we can surely show that it has no convergent subsequence, contradicting the compactness.
Dec
11
accepted Compact subsets of $c_0$
Dec
11
comment Compact subsets of $c_0$
Thanks. Though I searched this site, I haven't found that question.
Dec
11
asked Compact subsets of $c_0$