Results 201 to 210 of about 5,402 (301)

Mean‐field limit of non‐exchangeable systems

open access: yesCommunications on Pure and Applied Mathematics, Volume 78, Issue 4, Page 651-741, April 2025.
Abstract This paper deals with the derivation of the mean‐field limit for multi‐agent systems on a large class of sparse graphs. More specifically, the case of non‐exchangeable multi‐agent systems consisting of non‐identical agents is addressed. The analysis does not only involve PDEs and stochastic analysis but also graph theory through a new concept ...
Pierre‐Emmanuel Jabin   +2 more
wiley   +1 more source

Population Genetics Meets Ecology: A Guide to Individual‐Based Simulations in Continuous Landscapes

open access: yesEcology and Evolution, Volume 15, Issue 4, April 2025.
This paper aims to be a practical guide to spatial simulation, helping researchers to implement realistic and efficient spatial, individual‐based simulations and avoid common pitfalls. We explore how mating, reproduction, density‐dependent feedback, dispersal, spatial and temporal heterogeneity, and natural selection affect population dynamics and ...
Elizabeth T. Chevy   +11 more
wiley   +1 more source

Lower density soft operators and density soft topologies. [PDF]

open access: yesHeliyon
Ameen ZA, Alqahtani MH, Alghamdi OF.
europepmc   +1 more source

A Deterministic Model of the Gamma Radiation at the Soil Surface–Including Soil Moisture Correction for Better Radiation Data Exploitation in Soil Mapping

open access: yesJournal of Plant Nutrition and Soil Science, Volume 188, Issue 2, Page 299-311, April 2025.
ABSTRACT Background During the last decades, gamma spectrometry data have increasingly been used in soil science, for example, for mapping. However, the full data potential could not be exploited due to certain constraints, among which the insufficient representation of attenuating materials (in particular, water) in correction algorithms is the most ...
Ludger Herrmann, Georg Zimmermann
wiley   +1 more source

Nonstandard representation of the Dirichlet form and application to the comparison theorem

open access: yesMathematische Nachrichten, Volume 298, Issue 4, Page 1167-1183, April 2025.
Abstract The Dirichlet form is a generalization of the Laplacian, heavily used in the study of many diffusion‐like processes. In this paper, we present a nonstandard representation theorem for the Dirichlet form, showing that the usual Dirichlet form can be well‐approximated by a hyperfinite sum.
Haosui Duanmu, Aaron Smith
wiley   +1 more source

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