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Estimates for Schur Multipliers and Double Operator Integrals -- A Wavelet Approach
Classical Analysis and ODEs · Submitted 14 Apr 2021
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We also use these techniques to provide a simple proof of Schur multiplier bounds for double operator integrals, with bounded symbol in $B^{\frac{1}{p}-\frac{1}{2}}_{\frac{2p}{2-p},p}(\mathbb R,L_\infty(\mathbb R))$, which extends Birman and Solomyak's result to symbols without compact domain.
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The abstract, sentence by sentence
We discuss the work of Birman and Solomyak on the singular numbers of integral operators from the point of view of modern approximation theory, in particular with the use of wavelet techniques. We are able to provide a simple proof of norm estimates for integral operators with kernel in $B^{\frac{1}{p}-\frac{1}{2}}_{p,p}(\mathbb R,L_2(\mathbb R))$. This recovers, extends and sheds new light on a theorem of Birman and Solomyak. We also use these techniques to provide a simple proof of Schur multiplier bounds for double operator integrals, with bounded symbol in $B^{\frac{1}{p}-\frac{1}{2}}_{\frac{2p}{2-p},p}(\mathbb R,L_\infty(\mathbb R))$, which extends Birman and Solomyak's result to symbols without compact domain.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We discuss the work of Birman and Solomyak on the singular numbers of integral operators from the point of view of modern approximation theory, in particular with the use of wavelet techniques. | background 0.64 | 0.44 | 0.06 | asserted 0.92 |
| s1 | We are able to provide a simple proof of norm estimates for integral operators with kernel in $B^{\frac{1}{p}-\frac{1}{2}}_{p,p}(\mathbb R,L_2(\mathbb R))$. | result 0.77 | 0.95 | 0.31 | asserted 0.98 |
| s2 | This recovers, extends and sheds new light on a theorem of Birman and Solomyak. | interpretation 0.94 | 0.83 | 0.24 | asserted 1.00 |
| s3 | We also use these techniques to provide a simple proof of Schur multiplier bounds for double operator integrals, with bounded symbol in $B^{\frac{1}{p}-\frac{1}{2}}_{\frac{2p}{2-p},p}(\mathbb R,L_\infty(\mathbb R))$, which extends Birman and Solomyak's result to symbols without compact domain. | contribution 0.55 | 0.95 | 0.41 | asserted 1.00 |
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The paper
Original abstract
We discuss the work of Birman and Solomyak on the singular numbers of integral operators from the point of view of modern approximation theory, in particular with the use of wavelet techniques. We are able to provide a simple proof of norm estimates for integral operators with kernel in $B^{\frac{1}{p}-\frac{1}{2}}_{p,p}(\mathbb R,L_2(\mathbb R))$. This recovers, extends and sheds new light on a theorem of Birman and Solomyak. We also use these techniques to provide a simple proof of Schur multiplier bounds for double operator integrals, with bounded symbol in $B^{\frac{1}{p}-\frac{1}{2}}_{\frac{2p}{2-p},p}(\mathbb R,L_\infty(\mathbb R))$, which extends Birman and Solomyak's result to symbols without compact domain.
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