List questions from compact-operators

87

Views

Is $Ax = (\alpha_1 x_1, \alpha_2 x_2, \alpha_3 x_3, \dots, \alpha_k x_k, 0, 0, \dots)$ a compact operator?

Published on 26 May 2016 - 6:21

32

Views

I want to calulate the range of an operator $S$ which maps $L^{2}$ into $H^{1}(\Omega)$?

Published on 29 May 2016 - 15:01

119

Views

Show that the following is a bounded linear operator on $L^2(R_+)$ Calculate the adjoint operator.

Published on 23 Feb 2026 - 17:44

209

Views

Compact operator and norm

Published on 09 Jun 2016 - 16:23

66

Views

Is K(H) separable?

Published on 28 Mar 2026 - 23:20

164

Views

Why is a normal operator with certain spectral properties compact?

Published on 15 Jun 2016 - 20:10

161

Views

Question on spectral theorem for compact operators

Published on 17 Jun 2016 - 11:41

102

Views

A restriction $A_2$ of a compact self-adjoint compact linear operator $A$ is also compact and self-adjoint?

Published on 17 Jun 2016 - 12:33

60

Views

Operators, Riesz

Published on 28 Mar 2026 - 3:10

118

Views

Sufficient conditions for $f(T)$ to be compact and self adjoint whenever $T$ is compact and self adjoint

Published on 21 Jun 2016 - 18:01

64

Views

Compactness of an operator

Published on 27 Jun 2016 - 15:22

104

Views

All nonzero singular values of $A$ are equal to $1$ iff $A^=A^AA^$ and $A=AA^A$

Published on 27 Jun 2016 - 18:34

90

Views

Is $p \vee q \leq p+q$ for $p,q$ projections?

Published on 29 Jun 2016 - 9:16

76

Views

A $*$-closed algebra of compact operators is completely reducible

Published on 30 Jun 2016 - 21:20

1.2k

Views

Finding this operator's spectrum

Published on 01 Jul 2016 - 8:23

List Question

Is $Ax = (\alpha_1 x_1, \alpha_2 x_2, \alpha_3 x_3, \dots, \alpha_k x_k, 0, 0, \dots)$ a compact operator?

I want to calulate the range of an operator $S$ which maps $L^{2}$ into $H^{1}(\Omega)$?

Show that the following is a bounded linear operator on $L^2(R_+)$ Calculate the adjoint operator.

Compact operator and norm

Is K(H) separable?

Why is a normal operator with certain spectral properties compact?

Question on spectral theorem for compact operators

A restriction $A_2$ of a compact self-adjoint compact linear operator $A$ is also compact and self-adjoint?

Operators, Riesz

Sufficient conditions for $f(T)$ to be compact and self adjoint whenever $T$ is compact and self adjoint

Compactness of an operator

All nonzero singular values of $A$ are equal to $1$ iff $A^=A^AA^$ and $A=AA^A$

Is $p \vee q \leq p+q$ for $p,q$ projections?

A $*$-closed algebra of compact operators is completely reducible

Finding this operator's spectrum

Trending Questions

Popular # Hahtags

Popular Questions