Results 31 to 40 of about 148,763 (276)

Bi-Univalent Functions Based on Binomial Series-Type Convolution Operator Related with Telephone Numbers

open access: yesAxioms, 2023
This paper introduces two novel subclasses of the function class Σ for bi-univalent functions, leveraging generalized telephone numbers and Binomial series through convolution. The exploration is conducted within the domain of the open unit disk.
Hasan Bayram   +3 more
doaj   +1 more source

The Convolution Theorem Involving Windowed Free Metaplectic Transform

open access: yesFractal and Fractional, 2023
The convolution product is widely used in many fields, such as signal processing, numerical analysis and so on; however, the convolution theorem in the domain of the windowed metaplectic transformation (WFMT) has not been studied.
Manjun Cui, Zhichao Zhang
doaj   +1 more source

Singular Measures and Convolution Operators [PDF]

open access: yesActa Mathematica Sinica, English Series, 2006
We show that in the study of certain convolution operators, functions can be replaced by measures without changing the size of the constants appearing in weak type (1,1) inequalities. As an application, we prove that the best constants for the centered Hardy-Littlewood maximal operator associated to parallelotopes do not decrease with the dimension.
Aldaz, J.M., Varona, J.L.
openaire   +5 more sources

A β-Convolution Theorem Associated with the General Quantum Difference Operator

open access: yesJournal of Function Spaces, 2022
In this paper, we prove some properties of the β-partial derivative. We define the β-convolution of two functions associated with the general quantum difference operator, Dβft=fβt−ft/βt−t; β is a strictly increasing continuous function.
Enas M. Shehata, Rasha M. El Zafarani
doaj   +1 more source

The Fourier transform and convolutions generated by a differential operator with boundary condition on a segment

open access: yes, 2013
We introduce the concepts of the Fourier transform and convolution generated by an arbitrary restriction of the differentiation operator in the space $L_{2}(0,b).$ In contrast to the classical convolution, the introduced convolution explicitly depends on
Kanguzhin, Baltabek   +1 more
core   +1 more source

On the product formula and convolution associated with the index Whittaker transform

open access: yes, 2019
We deduce a product formula for the Whittaker $W$ function whose kernel does not depend on the second parameter. Making use of this formula, we define the positivity-preserving convolution operator associated with the index Whittaker transform, which is ...
Guerra, Manuel   +2 more
core   +1 more source

Periodic homogenization of non-local operators with a convolution type kernel [PDF]

open access: yes, 2016
The paper deals with homogenization problem for a non-local linear operator with a kernel of convolution type in a medium with a periodic structure. We consider the natural diffusive scaling of this operator and study the limit behaviour of the rescaled ...
Piatnitski, Andrey, Zhizhina, Elena
core   +2 more sources

Convolution Integral Operators

open access: yesSiberian Mathematical Journal, 2018
The author considers the space $L_2:=L_2(\mathbb{R}^N)$ consisting of the measurable and square-integrable functions on $\mathbb{R}^{N}$. As in the work by \textit{L. Hörmander} [Acta Math. 104, 93--140 (1960; Zbl 0093.11402)], the author considers the space $L_2^2$ being the set of all continuous linear operators in $L_2$ which commute with shifts ...
openaire   +2 more sources

Bidirectional-Convolutional LSTM Based Spectral-Spatial Feature Learning for Hyperspectral Image Classification

open access: yesRemote Sensing, 2017
This paper proposes a novel deep learning framework named bidirectional-convolutional long short term memory (Bi-CLSTM) network to automatically learn the spectral-spatial features from hyperspectral images (HSIs).
Qingshan Liu   +3 more
doaj   +1 more source

Harmonic analysis on Heisenberg--Clifford Lie supergroups

open access: yes, 2011
We define a Fourier transform and a convolution product for functions and distributions on Heisenberg--Clifford Lie supergroups. The Fourier transform exchanges the convolution and a pointwise product, and is an intertwining operator for the left regular
Alldridge, Alexander   +2 more
core   +1 more source

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