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Feb
19
revised Are these linear maps bounded?
rolled back to a previous revision
Feb
19
comment Are these linear maps bounded?
I upvote in order to compensate for the spite downvote.
Feb
15
awarded  Nice Answer
Feb
14
comment Hilbert space structure on $C^{*}$ algebras
@JonasMeyer Interesting. Please could you elaborate on your comment?
Feb
14
answered Strictly convex iff norm is strictly sub additive
Feb
11
comment Conditions for Real and Complex Inner Product Spaces
@Jamil_V What operations define $\langle\cdot,\cdot\rangle_r$ depends on what operations define $\langle\cdot,\cdot\rangle$ since $\langle\cdot,\cdot\rangle_r$ is defined to be the real part of $\langle\cdot,\cdot\rangle$. If $E$ is the space $L^2$ then the definition of $\langle\cdot,\cdot\rangle$ involves an integral. But since you don't have more information about $E$ you cannot say more about $\langle\cdot,\cdot\rangle_r$.
Feb
9
answered Conditions for Real and Complex Inner Product Spaces
Feb
6
awarded  Popular Question
Feb
6
awarded  Notable Question
Jan
26
awarded  Popular Question
Jan
16
comment If a sequence of points approaches a convex compact set, then the limit of Cesàro means is in the set
What's a realtion?
Jan
16
comment If $f$ is continuous & $\lim_{|x|\to {\infty}}f(x)=0$ then $f$ is uniformly continuous or NOT?
Great answer, just enough detail to be able to write down a proof : )
Jan
16
comment Why is $R-\lambda$ invertible for $|\lambda|<1$
@Marc Did you do it?
Jan
14
comment Why is $R-\lambda$ invertible for $|\lambda|<1$
@Marc Yes I can explain but I think you should try to verify this yourself. I feel that I already gave away too much information. I'll let you try and if you can't figure it out in the next 24 hours I'll add the full calculation.
Jan
14
answered Why is $R-\lambda$ invertible for $|\lambda|<1$
Jan
13
awarded  Yearling
Jan
10
awarded  Popular Question
Jan
4
awarded  Notable Question
Jan
1
revised Parametrisation of the surface a torus
rolled back to a previous revision
Dec
28
comment Kreyszig's Functional Analysis Section 2.8: How is the canonical embedding map injective?
Certainly. Hahn Banach does not apply here, I deleted what I had written.