Results 61 to 70 of about 242,792 (179)

Parametric Fourier and Mellin transforms of power-constructible functions

Forum of Mathematics, Sigma
We enrich the class of power-constructible functions, introduced in [CCRS23], to a class $\mathcal {C}^{\mathcal {M,F}}$ of algebras of functions which contains all complex powers of subanalytic functions and their parametric Mellin and Fourier ...
Raf Cluckers, Georges Comte, Tamara Servi   +2 more
doaj   +1 more source

Conditional Fourier-Feynman Transforms with Drift on a Function Space

Journal of Function Spaces, 2019
In this paper we derive change of scale formulas for conditional analytic Fourier-Feynman transforms and conditional convolution products of the functions which are the products of generalized cylinder functions and the functions in a Banach algebra ...
Dong Hyun Cho, Suk Bong Park
doaj   +1 more source

Programs for high-speed Fourier, Mellin and Fourier-Bessel transforms [PDF]

Several FORTRAN program modules for performing one-dimensional and two-dimensional discrete Fourier transforms, Mellin, and Fourier-Bessel transforms are described along with programs that realize the algebra of high speed Fourier transforms on a ...
Debabov, A. S., Ikhabisimov, D. K., Kolosov, B. I., Usikov, D. A.   +3 more
core   +1 more source

MULTIPLE FOURIER SERIES AND FOURIER INTEGRALS WITH NON-SEPARABLE VARIABLES

Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2020
Background. Integral transforms for functions of several variables are an actively developing area of mathematical analysis. Numerous applications in integral transforms method for solving equations of mathematical physics, in signal processing of ...
O. E. Yaremko, N. N. Yaremko, E. S. Mogileva   +2 more
doaj   +1 more source

A hyperkähler Fourier transform

Differential Geometry and its Applications, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
BARTOCCI, CLAUDIO, BRUZZO U., HERNANDEZ RUIPEREZ D.   +2 more
openaire   +3 more sources

Solving Pythagorean fuzzy partial fractional diffusion model using the Laplace and Fourier transforms. [PDF]

Granul Comput, 2023
Akram M, Ihsan T.
europepmc   +1 more source

REVISED FAST FOURIER TRANSFORM

Radio Electronics, Computer Science, Control, 2014
The problem of realisation of the Discrete Fourier Transform in on-line is analysed because of non-efficient consuming a time for a new recalculation of spectrum samples if one discrete-time signal sample or even some small portion of samples in period are replaced by new sample or by new samples, respectively.
openaire   +4 more sources

Quantification of relative neurite tortuosity using Fourier transforms. [PDF]

J Neurosci Methods, 2021
Smith B, Datta A, Lee J, Evans D, Fleiszig S.   +4 more
europepmc   +1 more source

Direct Construction of Peaks from Free Induction Decay Curves for Gas Chromatography-Molecular Rotational Resonance Spectroscopy without Fourier Transforms. [PDF]

Anal Chem, 2022
Wahab MF, Neill JL, Armstrong DW.
europepmc   +1 more source

On the positivity of Fourier transforms

, 2014
Characterizing in a constructive way the set of real functions whose Fourier transforms are positive appears to be yet an open problem. Some sufficient conditions are known but they are far from being exhaustive.
Giraud, Bertrand G., Peschanski, Robi
core   +1 more source