Results 81 to 90 of about 5,174 (205)

The Long Shadow of Karl Weierstraß Over the Calculus of Variations

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT At first glance, it appears that the contents of Karl Weierstraß's (1815–1897) lecture courses on the calculus of variations were made available to the public only in the seventh volume of his Mathematische Werke, and thus not until 30 years after his death.
Peter Ullrich
wiley   +1 more source

On the construction of fields and the topological role of Jacobi fields [PDF]

open access: yesReports on Mathematical Physics, 1985
Given a nuclear F-space E with continuous involution * denote by T(E) the tensor algebra over E and by \(\underline E\) the completion of T(E) with respect to the locally convex direct sum topology of the projective tensor product topologies on \(E^{\otimes n}\), \(n=1,2,... \). \(\underline E\) is a nuclear *-algebra with unit.
openaire   +1 more source

Stochastic Galerkin and Monte Carlo Methods for Parabolic Problems: Numerical Performance of Variational Matrix‐Free Approximations

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT Stochastic Galerkin methods offer unexplored potential for the numerical simulation of parabolic problems with random variables, in particular if they are combined with variational discretizations of the space and time variables. Due to the high dimensionality, the solution of the arising algebraic systems do not become feasible without ...
Moataz Dawor   +2 more
wiley   +1 more source

Environmental Sustainability of Soybean Production in the Democratic Republic of Congo: Cases of Production Systems in the South‐Kivu and Kasaï‐Lomami Provinces

open access: yesJournal of Sustainable Agriculture and Environment, Volume 5, Issue 4, December 2026.
Small versus large scale soybean production systems' footprints. ABSTRACT Soybean is increasingly grown in the Democratic Republic of the Congo (DRC), produced mainly in small‐scale systems and supplied locally for human consumption. Prospects of large‐scale expansion and intensification, with potential environmental drawbacks, loom and call for a ...
Réussite Bugale Malembaka   +4 more
wiley   +1 more source

Rational points on even‐dimensional Fermat cubics

open access: yesTransactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract We show that even‐dimensional Fermat cubic hypersurfaces are rational over any field of characteristic not equal to three, by constructing explicit rational parameterizations with polynomials of low degree. As a byproduct of our rationality constructions, we obtain estimates for the number of their rational points over a number field and ...
Alex Massarenti
wiley   +1 more source

Extreme Atmospheric Moistening and Drying Events at Ny‐Ålesund and Their Relation to Weather Systems

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
Abstract Understanding the role of water vapor in Arctic amplification requires a detailed evaluation of its spatio‐temporal variability. In this work, we use an integrated water vapor (IWV) data set from a ground‐based microwave radiometer at Ny‐Ålesund, Svalbard, covering 2012–2024, to characterize temporal IWV variability.
Christian Buhren   +6 more
wiley   +1 more source

Fractional Nikiforov‐Uvarov Formalism for Dunkl‐Schrödinger Equation With Deng‐Fan Molecular Model

open access: yesInternational Journal of Quantum Chemistry, Volume 126, Issue 19, October 5, 2026.
The effect of Dunkl deformation parameters on energy eigenvalues of Deng‐Fan potential (DFP) is evaluated using conformable fractional Nikiforov‐Uvarov method. Our results show that energy eigenvalues of DFP for selected diatomic molecules are significantly influenced by the Dunkl deformation parameter, fractional parameter, kinetic pre‐factor and ...
H. I. Alrebdi   +3 more
wiley   +1 more source

Disrupted Sensory–Motor Network Integrity in Excessive Online Gaming: Insight From Multimodal Morphometric Mapping

open access: yesBrain and Behavior, Volume 16, Issue 10, October 2026.
ABSTRACT Introduction Excessive online gaming (EOG) is a transitional stage between recreational gaming and internet gaming disorder (IGD), characterized by impaired self‐control and escalating engagement. Early identification of neural and behavioral vulnerabilities is crucial for understanding IGD development. Methods Fifty‐nine young adults (30 EOG,
Zulalanmu Abudouxukuer   +10 more
wiley   +1 more source

Free and Forced Vibration Analysis of Airtight Cylindrical Vessels with Doubly Curved Shells of Revolution by Using Jacobi-Ritz Method

open access: yesShock and Vibration, 2017
This paper presents free and forced vibration analysis of airtight cylindrical vessels consisting of elliptical, paraboloidal, and cylindrical shells by using Jacobi-Ritz Method.
Fuzhen Pang   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy