Mathematics
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SHBaoS
  • Member for 6 years, 8 months
  • Last seen more than 4 years ago
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All Questions Answers
Score Newest
question
4
$X$ is a Banach space, $T \in B(X)$ and $T^*$ be its adjoint, show that $ \lVert Tx \rVert \geq \lVert (T^*)^{-1}\rVert^{-1}\lVert x \rVert$
Mar 1, 2017
question
4
Find the adjoint operator of $T(x_1,x_2,x_3,\dots)=(\sum_{n=2}^\infty x_n, x_1, x_2, x_3, \dots)$ in $\ell^1$.
Mar 2, 2017
question
3
Continuous Function Maps Open Interval to Open Sets?
Mar 21, 2017
question
3
Why does $(A-I)^2=0$ implies all eigenvalues of $A$ are $1$?
Mar 26, 2017
question
3
If $S$ is a ring with the property that $s=s^2$ for each $s \in S$, then is $S$ commutative?
Mar 31, 2017
question
3
Number of triples that are connected by exactly 2 edges in a random graph
Sep 11, 2017
question
3
Spectrum of isometry
Apr 19, 2018
question
2
Find a Banach space $X$ and a closed subspace $Y\leq X$ such that exists $f\in X\backslash Y$, for any $y \in Y$, $\lVert f-y \rVert > dist(f,Y)$
Feb 27, 2017
question
2
Surface S is part of $x^2+y^2=1$ between planes $z=0$ and $x+y+z=2$. A vector field $F=\langle x,y,z\rangle$. Find the flux.
Mar 27, 2017
question
2
Is the subset $T=\{(x,y):x\notin \mathbb{Q} \text{ or } y \notin \mathbb{Q}\}$ connected? [duplicate]
Apr 2, 2017

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