Results 31 to 40 of about 508 (181)

Vector subdifferentials and tangent cones

open access: yesJournal of Numerical Analysis and Approximation Theory, 2005
Following the Rockafellar's definition for the subdifferential of a real map we define a vector subdifferential using the normal cone to the epigraph of the function.
Cristina Stamate
doaj   +2 more sources

Analysis of a Viscoplastic Burgers Equation

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT We study a Burgers equation featuring an additional stress term that is governed by a positively 1$\hskip.001pt 1$‐homogeneous potential. This problem is motivated by the so‐called Hibler's sea ice model, which treats sea ice as a non‐Newtonian fluid, where the stress tensor includes such a term in order to account for the plastic response of ...
Marita Thomas, Xin Liu, Edriss Titi
wiley   +1 more source

Sensitivity analysis of parametric vector equilibrium problems on Fréchet coderivative

open access: yesJournal of Inequalities and Applications
In this paper, the sensitivity analysis of parametric vector equilibrium problems (for short PVEP) is conducted based on the Fréchet coderivative of a multifunction.
Xicai Deng, Yibo Liu, Chongyi Zhong
doaj   +1 more source

Total Variation Regularized GRACE(‐FO) Inversion

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Gravity estimation from satellite‐satellite tracking missions such as GRACE(‐FO) is an ill‐posed inverse problem. The conventional approach to regularized inversion of GRACE(‐FO) measurements uses L2 ${L}_{2}$‐Tikhonov regularization with a heuristic constraint matrix derived based on knowledge of spatiotemporal distribution of the signal ...
G. Jacob   +4 more
wiley   +1 more source

Nonsmooth analysis and optimization on partially ordered vector spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1992
Interval-Lipschitz mappings between topological vector spaces are defined and compared with other Lipschitz-type operators. A theory of generalized gradients is presented when both spaces are locally convex and the range space is an order complete vector
Thomas W. Reiland
doaj   +1 more source

What are the carbon services from cover‐crop adoption worth from farmers' perspective?

open access: yesAmerican Journal of Agricultural Economics, Volume 108, Issue 3, Page 901-925, May 2026.
Abstract We derive shadow prices of carbon services provided by cover crops relative to non‐cover‐crop agricultural practices, accounting for carbon sequestration and greenhouse gas (GHG) emissions. We model the agricultural technology by integrating crop production, carbon sequestration, and GHG emissions.
Saurav Raj Kunwar   +3 more
wiley   +1 more source

Enlargements of Monotone Operators Determined by Representing Function

open access: yesJournal of Mathematical Extension, 2012
In this paper, we study a new enlargement of subdifferential for any proper lower semicontinuous function. We know that ε-subdifferential of any proper lower semicontinuous function is an enlargement of its subfifferential and any point from the graph
M. Rezaei
doaj  

Generalized derivatives and optimization problems for n-dimensional fuzzy-number-valued functions

open access: yesOpen Mathematics, 2020
In this paper, we present the concepts of generalized derivative, directional generalized derivative, subdifferential and conjugate for n-dimensional fuzzy-number-valued functions and discuss the characterizations of generalized derivative and ...
Xie Ting, Gong Zengtai, Li Dapeng
doaj   +1 more source

On Bounds for Norms of Reparameterized ReLU Artificial Neural Network Parameters: Sums of Fractional Powers of the Lipschitz Norm Control the Network Parameter Vector

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 4, Page 2135-2160, 15 March 2026.
ABSTRACT It is an elementary fact in the scientific literature that the Lipschitz norm of the realization function of a feedforward fully connected rectified linear unit (ReLU) artificial neural network (ANN) can, up to a multiplicative constant, be bounded from above by sums of powers of the norm of the ANN parameter vector.
Arnulf Jentzen, Timo Kröger
wiley   +1 more source

On the 85th Birthday Anniversary of the RAS Corresponding Member, Professor A. A. Tolstonogov

open access: yesИзвестия Иркутского государственного университета: Серия "Математика"
The paper is dedicated to the scientific and scientific-pedagogical activities of the professor, Corresponding Member of the Russian Academy of Sciences A. A. Tolstonogov, who turns 85 in March 2025.
I.V. Bychkov   +4 more
doaj   +1 more source

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