Results 191 to 200 of about 11,399,904 (367)

Fat equator effect and minimality in immersions and submersions of the sphere

open access: yesTransactions of the London Mathematical Society, Volume 12, Issue 1, December 2025.
Abstract Inspired by the equatorial concentration of measure phenomenon in the sphere, a result which is deduced from the general (and intrinsic), concentration of measure in Sn(1)$\mathbb {S}^n(1)$, we describe in this paper an equatorial concentration of measure satisfied by the closed (compact without boundary), isometric and minimal immersions x:Σm→
Vicent Gimeno i Garcia, Vicente Palmer
wiley   +1 more source

A Hybrid AI and Fuzzy MCDM Approach for Retailer Evaluation: Leveraging Sentiment Analysis and Expert Insights

open access: yesApplied AI Letters, Volume 6, Issue 3, October 2025.
This study proposes an AI‐enhanced decision‐making framework that integrates sentiment analysis of customer reviews with q‐rung orthopair fuzzy MCDM to evaluate retailer performance. By analyzing 8,000 reviews from major U.S. retailers, the model bridges unstructured feedback and structured evaluation, offering actionable insights into service ...
Adem Pinar
wiley   +1 more source

Error Analysis of a Pressure‐Correction Method With Explicit Time‐Stepping

open access: yesInternational Journal for Numerical Methods in Fluids, Volume 97, Issue 10, Page 1363-1378, October 2025.
We study explicit variants of this well‐established pressure‐correction scheme for solving the Navier–Stokes equations. Step 3 is replaced by an explicit time‐integration method. We give the complete error analysis for this scheme that allows for highly efficient implementations.
Utku Kaya, Thomas Richter
wiley   +1 more source

Existence of Weak Solutions for a Degenerate Goursat‐Type Linear Problem

open access: yesMathematical Methods in the Applied Sciences, Volume 48, Issue 15, Page 14334-14341, October 2025.
ABSTRACT For a generalization of the Gellerstedt operator with mixed‐type Dirichlet boundary conditions to a suitable Tricomi domain, we prove the existence and uniqueness of weak solutions of the linear problem and for a generalization of this problem.
Olimpio Hiroshi Miyagaki   +2 more
wiley   +1 more source

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