Results 71 to 80 of about 54,965 (200)

On the Landau-Kolmogorov inequality between $\| f' \|_{\infty}$, $\| f \|_{\infty}$ and $\| f''' \|_1$

Researches in Mathematics, 2019
We solve the Landau-Kolmogorov problem on finding sharp additive inequalities that estimate $\| f' \|_{\infty}$ in terms of $\| f \|_{\infty}$ and $\| f''' \|_1$.
D. Skorokhodov
doaj   +1 more source

An Efficient overloaded implementation of forward mode automatic differentiation in MATLAB [PDF]

, 2006
The Mad package described here facilitates the evaluation of first derivatives of multidimensional functions that are defined by computer codes written in MATLAB.
Forth, Shaun A.
core   +1 more source

An Accurate Fourier-Based Method for Three-Dimensional Reconstruction of Transparent Surfaces in the Shape-From-Polarization Method

IEEE Access, 2020
The Fourier-based gradient field integration method can efficiently reconstruct transparent surfaces from the measured gradient data in the Shape-from-polarization method.
Zhuang Sun, Yang Qiao, Zhaoguo Jiang, Xiping Xu, Jing Zhou, Xuanrui Gong   +5 more
doaj   +1 more source

The differentiation operator in the space of unifornly convergent Dirichlet series [PDF]

, 2020
This is the peer reviewed version of the following article: Bonet, J. The differentiation operator in the space of uniformly convergent Dirichlet series. Mathematische Nachrichten.
Bonet Solves, José Antonio
core   +1 more source

Differential operator in seizure detection

Computers in Biology and Medicine, 2012
15 pages, 3 figures, two tables. Submitted to Computers in Biology and Medicine (Elsevier)
openaire   +3 more sources

GMRES for the differentiation operator

, 2008
We investigate using the GMRES method with the differentiation operator. This operator is unbounded, and thus does not fall into the framework of existing Krylov subspace theory.
Sheehan Olver, Olver, Sheehan
core  

Operator theory, operator algebras and applications

, 2014
This book consists of research papers that cover the scientific areas of the International Workshop on Operator Theory, Operator Algebras and Applications, held in Lisbon in September 2012.
Bastos, M, Spitkovsky, Ilya, Lebre, Amarino, Samko, Stefan   +3 more
core   +1 more source

Computing with Differential-difference Operators

Journal of Symbolic Computation, 1999
The paper shows how Maple can be used to prove identities in the algebra generated be differential-difference operators (Dunkl operators), multiplication by coordinate functions and group translation, essentially in polynomial arithmetic. The proposed technique allows a conceptual proof of a complete orthogonal decomposition of the harmonic polynomials
openaire   +1 more source

Weighted differentiation composition operators from the logarithmic Bloch space to the weighted-type space

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
The boundedness of the weighted differentiation composition opera- tor from the logarithmic Bloch space to the weighted-type space is characterized in terms of the sequence (zn)n∈N0.
Li Songxiao, Stević Stevo
doaj   +1 more source

A bi‐directional fractional‐order derivative mask for image processing applications

IET Image Processing, 2020
Fractional computation has been recently designed as a major mathematical tool in image and signal processing fields. This study presents a novel operator established for two‐dimensional fractional differentiation.
Meriem Hacini, Fella Hachouf, Abdelfatah Charef   +2 more
doaj   +1 more source