Results 21 to 30 of about 3,272 (305)
Fourier integral operators with fold singularities. [PDF]
Journal für die reine und angewandte Mathematik (Crelles Journal), 1994 Sharp \(L^ 2 \to L^ q_ \alpha\) estimates are proved for a class of Fourier integral operators with associated canonical relation \({\mathcal C} \subset T^*X \times T^*Y\). It is assumed that one of the projection to \({\mathcal C} \to T^*X\) or \({\mathcal C} \to T^*Y\) is a fold or a submersion with folds.
Greenleaf, Allan, Seeger, Andreas
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Analysis and Geometry in Metric Spaces, 2023 The main purpose of this article is to establish some new characterizations of the (variable) Lipschitz spaces in terms of the boundedness of commutator of multilinear fractional Calderón-Zygmund integral operators in the context of the variable exponent
Zhang Pu, Wu Jianglong
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Generating functions for giant graviton bound states
Journal of High Energy Physics, 2023 We construct generating functions for operators dual to systems of giant gravitons with open strings attached. These operators have a bare dimension of order N so that the usual methods used to solve the planar limit are not applicable.
Warren Carlson +2 more
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Integral Fourier operators [PDF]
, 2017 Dieser Band basiert auf Vorlesungen, die in einer Schule über Fourier Integraloperatoren in Ouagadougou, Burkina Faso, 14. - 26. September 2015 gehalten wurden. Es bietet eine Einführung in die Fourier Integraloperatoren (FIO) und richtet sich sowohl an Masterstudierende und Promovenden als auch an interessierte Laien. Aufgrund der Breite des Spektrums
Audin, Michèle (Prof. Dr.) +6 more
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Time-frequency analysis of fourier integral operators [PDF]
Communications on Pure & Applied Analysis, 2010 We use time-frequency methods for the study of Fourier Integral operators (FIOs). In this paper we shall show that Gabor frames provide very efficient representations for a large class of FIOs. Indeed, similarly to the case of shearlets and curvelets frames, the matrix representation of a Fourier Integral Operator with respect to a Gabor frame is well ...
CORDERO, Elena +2 more
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Karpatsʹkì Matematičnì Publìkacìï, 2021 In this paper, we investigate the behavior of the sequence of $L^\Phi$-norm of functions, which are generated by differential and integral operators through their spectra (the support of the Fourier transform of a function $f$ is called its spectrum and ...
H.H. Bang, V.N. Huy
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Global $L^p$ continuity of Fourier integral operators [PDF]
Transactions of the American Mathematical Society, 2014 20 ...
CORIASCO, Sandro, M. Ruzhansky
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Mathematics, 2023 In this study, the inverse problems of recovering the heat transfer coefficient at the interface of integral measurements are considered. The heat transfer coefficient occurs in the transmission conditions of an imperfect contact type.
Sergey Pyatkov, Alexey Potapkov
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$h$-Admissible Fourier integral operators
TURKISH JOURNAL OF MATHEMATICS, 2016 Summary: We study in this work a class of \(h\)-admissible Fourier integral operators. These operators are bounded (respectively compact) in \(L^{2}\) if the weight of the amplitude is bounded (respectively tends to 0).
Aitemrar, Chafika Amel +1 more
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A fractional Fourier integral operator and its extension to classes of function spaces
Advances in Difference Equations, 2018 In this paper, an attempt is being made to investigate a class of fractional Fourier integral operators on classes of function spaces known as ultraBoehmians.
Shrideh K. Al-Omari
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