Results 21 to 30 of about 52,376 (308)
Perturbation of Orthogonal Fourier Expansions
Journal of Approximation Theory, 1998 In this paper, a generalized Jacobi measure on [-1, 1] is perturbed by exponentials of functionsbof bounded mean oscillation. If we consider the Fourier series in orthogonal polynomials associated to each modification, then certain estimates (uniform inn∈N andbbelonging to some neighbourhood of the origin) are obtained.
Guadalupe, J.J., Pérez, M.
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Fourier expansion in variational quantum algorithms
, 2023 The Fourier expansion of the loss function in variational quantum algorithms (VQA) contains a wealth of information, yet is generally hard to access. We focus on the class of variational circuits, where constant gates are Clifford gates and parameterized
Kiktenko, Evgeniy O. +2 more
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Modified Fourier expansions: theory, construction and applications
, 2010 Modified Fourier expansions present an alternative to more standard algorithms for the approximation of nonperiodic functions in bounded domains. This thesis addresses the theory of such expansions, their effective construction and computation, and ...
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The small Schottky-Jung locus in positive characteristics different from two [PDF]
, 2003 We prove that the locus of Jacobians is an irreducible component of the small Schottky locus in any characteristic different from $2$. The proof follows an idea of B.
Andreatta, Fabrizio, Fabrizio Andreatta
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Prediction of volcanic fractures based on prestack azimuthal anisotropy: A case study of LFS area in southern Songliao Basin [PDF]
Youqicang pingjia yu kaifaAnisotropic parameter inversion based on pre-stack azimuth gather seismic data is one of the primary methods for fracture prediction, among which two algorithms, RüGER approximate equation and Fourier series expansion, are more widely used.
LI Ning,MIAO He,CAO Kaifang
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Financial time series forecasting methods [PDF]
ITM Web of ConferencesThe paper presents the development of time series forecasting algorithms based on the Integrated Autoregressive Moving Average Model (ARIMA) and the Fourier Expansion model.
Zinenko Anna, Stupina Alena
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Axioms, 2022 In this paper, the Fourier series expansion of Tangent polynomials of higher order is derived using the Cauchy residue theorem. Moreover, some variations of higher-order Tangent polynomials are defined by mixing the concept of Tangent polynomials with ...
Cristina Bordaje Corcino +1 more
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On Basic Fourier-Bessel Expansions [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2018 When dealing with Fourier expansions using the third Jackson (also known as Hahn-Exton) $q$-Bessel function, the corresponding positive zeros $j_{kν}$ and the "shifted" zeros, $qj_{kν}$, among others, play an essential role. Mixing classical analysis with $q$-analysis we were able to prove asymptotic relations between those zeros and the "shifted" ones,
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Fourier series expansion for nonlinear Hamiltonian oscillators [PDF]
, 2010 The problem of nonlinear Hamiltonian oscillators is one of the classical questions in physics. When an analytic solution is not possible, one can resort to obtaining a numerical solution or using perturbation theory around the linear problem.
Daniel Campos +7 more
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