List questions from functional-calculus

Published on 21 Oct 2017 - 10:01

86

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Proving $(\lambda^{-1}-A^{-1})^{-1}=\lambda-\lambda^2(\lambda-A)^{-1}$

Published on 04 Nov 2017 - 20:38

277

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Searching for a proof that in a normed functional space of $C^0[0,1]$ with sup norm, that norm is nowhere differentiable.

Published on 06 Nov 2017 - 20:39

75

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Can't determine even function

Published on 07 Nov 2017 - 7:40

683

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Borel Functional Calculus of Commuting Operators

Published on 09 Nov 2017 - 12:26

978

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Functional derivative of generating function QFT

Published on 11 Nov 2017 - 18:02

66

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$(AB)^p =A^p B^p$?

Published on 21 Nov 2017 - 6:31

45

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Do we have $|BA|=B|A|$?

Published on 22 Nov 2017 - 7:01

1.1k

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Solving PDEs using the Ritz method on variational calculus problem (Student questions)

Published on 23 Feb 2026 - 23:03

4.3k

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Can a function be increasing or decreasing at a point?

Published on 13 Dec 2017 - 18:29

142

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Is it possible to evaluate this indefinite integral?

Published on 26 Dec 2017 - 14:56

4.6k

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Cauchy's integral formula for Cayley-Hamilton Theorem

Published on 06 Feb 2011 - 12:55

462

Views

Continuous functional calculus question

Published on 14 Jun 2011 - 8:08

1.7k

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Why do zeta regularization and path integrals agree on functional determinants?

Published on 30 Jul 2011 - 13:26

175

Views

Need help to understand a proof using functional calculus.

Published on 20 Aug 2012 - 1:18

List Question

Is $T(T^2)^{-1}$ a left-inverse for $T$?

Proving $(\lambda^{-1}-A^{-1})^{-1}=\lambda-\lambda^2(\lambda-A)^{-1}$

Searching for a proof that in a normed functional space of $C^0[0,1]$ with sup norm, that norm is nowhere differentiable.

Can't determine even function

Borel Functional Calculus of Commuting Operators

Functional derivative of generating function QFT

$(AB)^p =A^p B^p$?

Do we have $|BA|=B|A|$?

Solving PDEs using the Ritz method on variational calculus problem (Student questions)

Can a function be increasing or decreasing at a point?

Is it possible to evaluate this indefinite integral?

Cauchy's integral formula for Cayley-Hamilton Theorem

Continuous functional calculus question

Why do zeta regularization and path integrals agree on functional determinants?

Need help to understand a proof using functional calculus.

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