Results 51 to 60 of about 277,415 (327)
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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Multiscale Discrete Approximations of Fourier Integral Operators Associated with Canonical Transformations and Caustics [PDF]
Multiscale Modeling & simulation, 2012 We develop an algorithm for the computation of general Fourier integral operators associated with canonical graphs. The algorithm is based on dyadic parabolic decomposition using wave packets and enables the discrete approximate evaluation of the action ...
M. Hoop, G. Uhlmann, A. Vasy, H. Wendt
semanticscholar +1 more source
Banach algebra of the Fourier multipliers on weighted Banach function spaces
Concrete Operators, 2015 Let MX,w(ℝ) denote the algebra of the Fourier multipliers on a separable weighted Banach function space X(ℝ,w).We prove that if the Cauchy singular integral operator S is bounded on X(ℝ, w), thenMX,w(ℝ) is continuously embedded into L∞(ℝ).
Karlovich Alexei
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Fractal and Fractional, 2021 In the three-dimensional open rectangular domain, the problem of the identification of the redefinition function for a partial differential equation with Gerasimov–Caputo-type fractional operator, degeneration, and integral form condition is considered ...
Tursun K. Yuldashev +1 more
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Time and band limiting for matrix valued functions: an integral and a commuting differential operator [PDF]
arXiv.org, 2016 The problem of recovering a signal of finite duration from a piece of its Fourier transform was solved at Bell Labs in the 1960’s, by exploiting a ‘miracle’: a certain naturally appearing integral operator commutes with an explicit differential one. Here
Gr¨unbaum F A +2 more
semanticscholar +1 more source
On the Definition of Energy Flux in One-Dimensional Chains of Particles
Entropy, 2019 We review two well-known definitions present in the literature, which are used to define the heat or energy flux in one dimensional chains. One definition equates the energy variation per particle to a discretized flux difference, which we here show it ...
Paolo De Gregorio
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One result on boundedness of the Hilbert transform in Marcinkiewics spaces
Вестник КазНУ. Серия математика, механика, информатика, 2022 In mathematics and in signal theory, the Hilbert transform is an important linear operator that takes a real-valued function and produces another real-valued function.
Nurken Tursynbayuly Bekbayev +1 more
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Acta Polytechnica, 2017 We propose a new approach to the problem of finding the eigenvalues (energy levels) in the discrete spectrum of the one-dimensional Hamiltonian with an attractive Gaussian potential by using the well-known Birman-Schwinger technique. However, in place of
Silvestro Fassari +3 more
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Bicharacteristics and Fourier integral operators in Kasner spacetime [PDF]
International Journal of Geometric Methods in Modern Physics, 2015 The scalar wave equation in Kasner spacetime is solved, first for a particular choice of Kasner parameters, by relating the integrand in the wave packet to the Bessel functions. An alternative integral representation is also displayed, which relies upon the method of integration in the complex domain for the solution of hyperbolic equations with ...
ESPOSITO G, BATTISTA E, DI GREZIA E
openaire +4 more sources
Multigrid method for pricing European options under the CGMY process
AIMS Mathematics, 2019 We propose a fast multigrid method for solving the discrete partial integro-differential equations (PIDEs) arising from pricing European options when the underlying asset is driven by an infinite activity Lévy process.
Justin W. L. Wan
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