Results 11 to 20 of about 51 (41)

Computation of the Fourier transform for a continuous integrable function via NFFT

Frontiers in Applied Mathematics and Statistics
We investigate the approximation of continuous Fourier transforms by trigonometric sampling polynomials and their efficient evaluation by the non-equispaced fast Fourier transform (NFFT).
Daniel Potts, Manfred Tasche
doaj   +2 more sources

Precise Undersampling Theorems [PDF]

, 2010
Undersampling theorems state that we may gather far fewer samples than the usual sampling theorem while exactly reconstructing the object of interest-provided the object in question obeys a sparsity condition, the samples measure appropriate linear ...
Tanner, Jared, Donoho, David L.
core   +1 more source

On Aristotelian Ἐπιστήμη as ‘Understanding’

, 2001
Myles Burnyeat maintains that Aristotelian epistêmê, in so far as it deals with explanations, is properly identified as understanding rather than as knowledge.
Lesher, J. H.
core   +2 more sources

Sobolev Type Decomposition of Paley-Wiener-Schwartz Space with Application to Sampling Theory [PDF]

, 2007
2000 Mathematics Subject Classification: 94A12, 94A20, 30D20, 41A05.We characterize Paley-Wiener-Schwartz space of entire functions as a union of three-parametric linear normed subspaces determined by the type of the entire functions, their polynomial ...
Dryanov, Dimiter
core  

The Concept of Cause in Aristotle [PDF]

Aristotle distinguishes between four causes (Phy., B, 3; PsA, B, 11, 94a20-24): a) Material cause: that from which; the antecedent out of which a thing comes to be and persists. E.g. the bronze of the statue; the silver of the bowl b)
Ghomi, Mohammad Bagher
core   +2 more sources

Approximation results in Orlicz spaces by modified sampling Kantorovich operators

Demonstratio Mathematica
This paper deals with the modified sampling Kantorovich operators. We start by presenting the primary notations of Orlicz spaces and fundamental auxiliary results.
Turgay Metin
doaj   +1 more source

Nonlinear sampling Durrmeyer operators: approximation results in function spaces

Advanced Nonlinear Studies
In this paper we introduce and study the nonlinear version of sampling Durrmeyer operators. For what concerns the space of continuous functions, a pointwise and uniform convergence theorem have been established.
Travaglini Arianna, Vinti Gianluca
doaj   +1 more source

Discrete Quadratic-Phase Fourier Transform: Theory and Convolution Structures. [PDF]

Entropy (Basel), 2022
Srivastava HM, Lone WZ, Shah FA, Zayed AI.   +3 more
europepmc   +1 more source

Sampling Trajectories for the Short-Time Fourier Transform. [PDF]

J Fourier Anal Appl, 2022
Speckbacher M.
europepmc   +1 more source

Analysis of the equivalence relationship between l0-minimization and lp-minimization. [PDF]

J Inequal Appl, 2017
Wang C, Peng J.
europepmc   +1 more source