Results 61 to 70 of about 5,467 (228)

The Dunkl convolution operators and multipoint de la Vallee–Poussin problem

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2013
The Dunkl operator as an object of mathematical physics is considered, we study the kernel and the surjectivity of Dunkl convolution operators in the space of entire functions and the space of entire functions of exponential type.
Karina Raisovna Zabirova   +1 more
doaj   +1 more source

Sprechen über Farbe: Rubens und Poussin

open access: yes, 2011
In der Kunstwissenschaft ist nach wie vor umstritten, ob und wie sie sich mit dem Thema 'Farbe' auseinander setzen soll. 'Sprechen über Farbe' erörtert, wie Kunsttheoretiker in der Vergangenheit mit dem Thema umgegangen sind und welche methodischen ...
Schütze, Irene
core  

Poussin et les collectionneurs romains au XVIIe siècle

open access: yes, 1994
I collezionisti romani di Nicolas ...
FUMAGALLI, Elena
core  

A class of quadrature formulas and related Marcinkiewicz-Zygmund inequalities(一类求积公式及相关Marcinkiewicz-Zygmund不等式)

open access: yesZhejiang Daxue xuebao. Lixue ban
In this paper, we establish the Simpson quadrature formula for continuous periodic functions and investigate its quadrature accuracy for trigonometric polynomials, that is, when the quadrature formula holds exactly.
王丹丹(WANG Dandan), 赵易(ZHAO Yi)
doaj   +1 more source

Retrospective Mapping of Global Snow and Ice Cover Beyond the Satellite Observational Era

open access: yesEarth and Space Science, Volume 12, Issue 5, May 2025.
Abstract Monitoring Earth's snow and ice cover is essential for diverse applications, including climate studies, hydrological forecasting, and precipitation mapping. This study develops and evaluates methodologies to extend the Global Multisensor Automated Snow and Ice Mapping System (GMASI) records prior to its July 1987 inception, reconstructing high‐
Kingsley K. Kumah   +2 more
wiley   +1 more source

A Regularization Method to Solve a Cauchy Problem for the Two-Dimensional Modified Helmholtz Equation

open access: yesMathematics, 2019
In this paper, the ill-posed problem of the two-dimensional modified Helmholtz equation is investigated in a strip domain. For obtaining a stable numerical approximation solution, a mollification regularization method with the de la Vallée Poussin ...
Shangqin He, Xiufang Feng
doaj   +1 more source

Marshall's Ignorant Hand

open access: yes
Milton Quarterly, Volume 59, Issue 3, Page 128-138, October 2025.
Tomos Evans
wiley   +1 more source

Legacies of ‘Sublime Poussin’: Louis Marin’s plea for Poussin as a painter [PDF]

open access: yes, 2016
This article looks at ways of engaging with Louis Marin's career-spanning work on Poussin, from his verbal-visual analysis of signs and description in Landscape with a Man Killed by a Snake to his unfinished project devoted to the sublime and variation ...
Saint, NW
core   +1 more source

Poussin. Maastik

open access: yes, 1924
Tekst negatiivi ümbrikul: Poussin.
Selleke, Eduard
core  

Almost Conservative Four-Dimensional Matrices through de la Vallée-Poussin Mean

open access: yesAbstract and Applied Analysis, 2014
The purpose of this paper is to generalize the concept of almost convergence for double sequence through the notion of de la Vallée-Poussin mean for double sequences.
S. A. Mohiuddine, Abdullah Alotaibi
doaj   +1 more source

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