List questions from semigroup-of-operators

Published on 09 Dec 2021 - 13:22

1.1k

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The heat semigroup represented as $\{e^{t\Delta}; t>0\}$

Published on 10 Dec 2021 - 18:22

149

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The dual semigroup is equivalent in norm to its original semigroup

Published on 09 Jan 2022 - 21:46

83

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Weak limits in continuous convolution semigroups

Published on 10 Jan 2022 - 18:35

57

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Density of $H^1$ functions with bounded gradient

Published on 12 Jan 2022 - 13:16

129

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Continuous dependence on the right-hand side of a nonlinear PDE

Published on 24 Jan 2022 - 16:01

87

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$C_{0}$-semigroups with growth bound zero: how do constants $M_{\omega}$ grow as $\omega\to 0^{+}$?

Published on 28 Jan 2022 - 18:06

146

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I get a contradiction reguarding some operators in HIlbert spaces: where is the problem?

Published on 05 Feb 2022 - 5:25

163

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Show the second order derivative operator on a Banach space is dissipative

Published on 05 Feb 2022 - 15:21

93

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Semigroup preserves differentiability

Published on 27 Mar 2026 - 8:47

58

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Is the intersection of subsemigroups of a monoid $M$ that are also monoids, but with different identities from $M$, also a monoid?

Published on 27 Feb 2022 - 5:05

88

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$W^{1,\infty}(\Omega)$-estimate for solution of heat equation with Dirichlet boundary condition

Published on 01 Mar 2022 - 8:46

46

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Generalized identity for generator and evolution semigroup

Published on 01 Mar 2022 - 21:38

82

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$\pm A$ is sectorial implies it is bounded

Published on 07 Mar 2022 - 15:22

74

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Nonnegative selfadjoint operators generating strongly continuous semigroups

Published on 14 Mar 2022 - 4:56

List Question

Is it possible to approximate some PDE semigroups by explicit methods?

The heat semigroup represented as $\{e^{t\Delta}; t>0\}$

The dual semigroup is equivalent in norm to its original semigroup

Weak limits in continuous convolution semigroups

Density of $H^1$ functions with bounded gradient

Continuous dependence on the right-hand side of a nonlinear PDE

$C_{0}$-semigroups with growth bound zero: how do constants $M_{\omega}$ grow as $\omega\to 0^{+}$?

I get a contradiction reguarding some operators in HIlbert spaces: where is the problem?

Show the second order derivative operator on a Banach space is dissipative

Semigroup preserves differentiability

Is the intersection of subsemigroups of a monoid $M$ that are also monoids, but with different identities from $M$, also a monoid?

$W^{1,\infty}(\Omega)$-estimate for solution of heat equation with Dirichlet boundary condition

Generalized identity for generator and evolution semigroup

$\pm A$ is sectorial implies it is bounded

Nonnegative selfadjoint operators generating strongly continuous semigroups

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