Results 51 to 60 of about 734 (182)

On some properties of the asymptotic Samuel function

Mathematische Nachrichten, Volume 298, Issue 7, Page 2401-2423, July 2025.
Abstract The asymptotic Samuel function generalizes to arbitrary rings the usual order function of a regular local ring. Here, we explore some natural properties in the context of excellent, equidimensional rings containing a field. In addition, we establish some results regarding the Samuel slope of a local ring.
A. Bravo, S. Encinas, J. Guillán‐Rial
wiley   +1 more source

Betti numbers of powers of ideals

Le Matematiche, 2008
Let A=K[x1, ..... ,xn] be a standard graded polynomial ring over a field K, let M = (x_1, .... , x_n) be the graded maximal ideal and I a graded ideal of A.
Gioia Failla, Monica La Barbiera, Paola L. Staglianò   +2 more
doaj  

Hilbert–Kunz multiplicity of powers of ideals in dimension two

Bulletin of the London Mathematical Society, Volume 57, Issue 7, Page 2155-2176, July 2025.
Abstract We study the behavior of the Hilbert–Kunz multiplicity of powers of an ideal in a local ring. In dimension 2, we provide answers to some problems raised by Smirnov, and give a criterion to answer one of his questions in terms of a “Ratliff–Rush version” of the Hilbert–Kunz multiplicity.
Alessandro De Stefani, Shreedevi K. Masuti, Maria Evelina Rossi, Jugal K. Verma   +3 more
wiley   +1 more source

Constraining Solid Dynamics, Interface Rheology, and Slab Hydration in the Hikurangi Subduction Zone Using 3‐Dimensional Fully Dynamic Models

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 6, June 2025.
Abstract Simulating present‐day solid Earth deformation and volatile cycling requires integrating diverse geophysical data sets and advanced numerical techniques to model complex multiphysics processes at high resolutions. Subduction zone modeling is particularly challenging due to the large geographic extent, localized deformation zones, and the ...
D. Douglas, J. Naliboff, M. R. T. Fraters, J. Dannberg, D. Eberhart‐Phillips, S. Ellis   +5 more
wiley   +1 more source

Incorporating Deep Learning Into Hydrogeological Modeling: Advancements, Challenges, and Future Directions

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 2, June 2025.
Abstract Hydrogeological modeling is essential for managing groundwater systems, especially in the transport and remediation of contaminants. Traditional modeling methods face challenges due to the increasing complexity and volume of data. Deep learning (DL) has emerged as a promising tool, offering significant improvements in accuracy and efficiency ...
Zhenxue Dai, Chuanjun Zhan, Huichao Yin, Junjun Chen, Lulu Xu, Yuzhou Xia, Songlin Yang, Wei Chen, Mingxu Cao, Zhengyang Du, Xiaoying Zhang, Bicheng Yan, Yue Ma, Hao Wang, Farzad Moeini, Mohamad Reza Soltanian, Hung Vo Thanh, Kenneth C. Carroll   +17 more
wiley   +1 more source

Targeting carbon reduction in UK households: A new segmentation model using financial transaction data

Journal of Industrial Ecology, Volume 29, Issue 3, Page 846-862, June 2025.
Abstract Designing effective and targeted policies to reduce household emissions needs to consider variability in household consumption patterns, preferences, and financial capacities. This paper introduces a new segmentation model of household carbon footprints that uses financial transaction data from over 700,000 customers of a major high‐street ...
Jasmine Wells, Anna Trendl, Anne Owen, John Barrett, Norbert Jobst, David Leake   +5 more
wiley   +1 more source

Testing for Threshold Effects in the Presence of Heteroskedasticity and Measurement Error With an Application to Italian Strikes

Oxford Bulletin of Economics and Statistics, Volume 87, Issue 3, Page 659-689, June 2025.
Abstract We address the issue of testing for threshold nonlinearity in the conditional mean in the presence of conditional heteroskedasticity. We propose a supremum Lagrange multiplier approach to test a linear ARMA‐GARCH model versus a TARMA‐GARCH model.
Francesco Angelini, Massimiliano Castellani, Simone Giannerini, Greta Goracci   +3 more
wiley   +1 more source

Nocturnal sucrose does not reflect the hydrogen isotope composition of transitory starch in leaves as expected

Plant Biology, Volume 27, Issue 4, Page 461-475, June 2025.
The hydrogen isotope composition of leaf sucrose is independent of whether sucrose is synthesized from current assimilate or remobilized transitory starch. Abstract The hydrogen isotope composition (δ2H) of cellulose is inherently linked to that of sucrose synthesized in leaves.
A. Wacker, D. B. Nelson, G. Tcherkez, M. M. Lehmann, A. Kahmen, M. Holloway‐Phillips   +5 more
wiley   +1 more source

Rees congruences in lattice-ordered algebras

Publicationes Mathematicae Debrecen, 1994
A nonvoid subset \(S\) of a universal algebra \(A\) is called a Rees subset whenever the binary relation \(S\times S\cup \{\langle a,a\rangle; a\in A\backslash S\}\) is a congruence on \(A\); in this case \(S\times S\cup \{\langle a,a\rangle; a\in A\backslash\}\) is called a Rees congruence on \(A\).
Bordalo, G, Priestley, H
openaire   +3 more sources

How to Define, Use, and Interpret Pagel's λ$$ \lambda $$ (Lambda) in Ecology and Evolution

Global Ecology and Biogeography, Volume 34, Issue 4, April 2025.
ABSTRACT Aim Pagel's λ$$ \lambda $$ (lambda) is a useful tool in ecology and evolution for describing trait evolution, imputing missing species' data, and generalising ecological relationships beyond their study system. Here, we review the various applications and interpretations of λ$$ \lambda $$, highlight common misconceptions, and show how ...
William D. Pearse, T. Jonathan Davies, E. M. Wolkovich   +2 more
wiley   +1 more source