Badge
| Nice Answer | Answer score of 10 or more. This badge can be awarded multiple times. |
t.b. earned this badge 127 times |
may 19 at 11:56
Space of Complex Measures is Banach (proof?)
apr 23 at 11:36
Do continuous linear functions between Banach spaces extend?
apr 20 at 23:06
Maximum and Minimum
mar 24 at 9:14
Why does a Lipschitz function $f:\mathbb{R}^d\to\mathbb{R}^d$ map measure zero sets to measure zero sets?
dec 2 at 1:08
Question about the sum of chain groups
nov 24 at 20:34
Nested sequences of balls in a Banach space
nov 9 at 16:07
Two definitions of Lebesgue integration
oct 17 at 21:41
Finding the limit of $\frac {n}{\sqrt[n]{n!}}$
sep 6 at 18:55
When is the derived category abelian?
aug 15 at 19:30
construction of a linear functional in $\mathcal{C}([0,1])$
aug 15 at 16:25
If $\lim_n f_n(x_n)=f(x)$ for every $x_n \to x$ then $f_n \to f$ uniformly on $[0,1]$?
aug 10 at 0:58
Relation of this antisymmetric matrix $r = \left(\begin{smallmatrix}0 &1\\-1&0\end{smallmatrix}\right)$ to $i$
aug 8 at 6:58
How to show that $\mathbb R^n$ with the $1$-norm is not isometric to $\mathbb R^n$ with the infinity norm for $n>2$?
jul 16 at 21:32
How does $\sigma(T)$ change with respect to $T$?
may 21 '12 at 9:57
Is Banach-Alaoglu equivalent to AC?
may 15 '12 at 9:38
Banach space in functional analysis
may 6 '12 at 8:10
Cardinality of a Hamel basis
apr 29 '12 at 16:47
Show that a subgroup is isomorphic to $S_{n-1}$
apr 25 '12 at 8:01
Renorming $\mathcal{B}(\mathcal{H})$?
apr 22 '12 at 21:55
Do there exist closed subspaces $X$, $Y$ of Banach space, such that $X+Y$ is not closed?
apr 18 '12 at 19:53
Conformal Maps onto the Unit Disc in $\mathbb{C}$
apr 18 '12 at 19:53
Possible mistake in Krause's “Localization Theory”
apr 18 '12 at 19:53
Is the centre of a C*-algebra a sub-C*-algebra?
apr 18 '12 at 19:43
Is $[0,1]^\omega$ homeomorphic to $D^\omega$?
apr 10 '12 at 22:13
Meaning of “efface” in “effaceable functor” and “injective effacement”
apr 6 '12 at 14:38
where does the term “integral domain” come from?
apr 6 '12 at 14:38
A proof of the Riesz representation theorem
apr 6 '12 at 14:38
When is the ring of continuous functions absolutely flat?
apr 6 '12 at 14:38
definition of a groupoid
apr 1 '12 at 21:27
What is $\mbox{Hom}(\mathbb{Z}/2,\mathbb{Z}/n)$?
apr 1 '12 at 21:27
If derivative of a function is the zero function in $\mathbb R^n$, then the function is constant when the domain is path-connected
apr 1 '12 at 21:22
Prove that $\sigma(AB) \backslash \{0\} = \sigma(BA)\backslash \{0\} $
mar 28 '12 at 14:55
Is there a Lebesgue measurable choice function?
mar 23 '12 at 21:48
Countability of boundary points
mar 23 '12 at 7:52
Prove that $(n-m) \mid (n^r - m^r)$
mar 19 '12 at 2:51
On the equality case of the Hölder and Minkowski inequalites
mar 13 '12 at 18:19
Properties of Haar measure
mar 13 '12 at 17:39
Typo in Hatcher? $\mathbb{R}^n - \{x \} \cong S^{n-1} \times \mathbb{R}$?
mar 5 '12 at 14:06
Construction of “pathological” measures
mar 5 '12 at 9:21
Decreasing sequence of sets
feb 24 '12 at 15:49
Is there an explicit isomorphism between $L^\infty[0,1]$ and $\ell^\infty$?
feb 21 '12 at 21:53
Reference request: Fourier and Fourier-Stieltjes algebras
feb 5 '12 at 18:01
Summation involving a factorial: $1 + \sum_{j=1}^{n} j!j$
jan 18 '12 at 20:19
How to find the limit of a sum of reciprocals
jan 9 '12 at 19:05
Theorem of Steinhaus
jan 7 '12 at 18:01
If $1\leq p < \infty$ then show that $L^p([0,1])$ and $\ell_p$ are not topologically isomorphic
jan 4 '12 at 7:20
Differentiating an Inner Product
dec 31 '11 at 23:49
Proving an inequality with Cauchy-Schwarz
dec 31 '11 at 5:20
Why is $\ell^1(\mathbb{Z})$ not a $C^{*}$-algebra?
dec 13 '11 at 17:51
Nonnegative linear functionals over $l^\infty$
dec 12 '11 at 23:40
Non-unital rings: a few examples
dec 11 '11 at 15:09
How to deduce open mapping theorem from closed graph theorem?
dec 9 '11 at 13:50
examples of measurable functions on $\mathbb{R}$
