Results 31 to 40 of about 131 (94)

Modeling Transient Groundwater Flow in Unconfined Aquifers Under Dynamic Conditions Using Physics‐Informed Neural Networks

open access: yesWater Resources Research, Volume 62, Issue 3, March 2026.
Abstract Deep learning neural networks (DLNNs) hold great potential for modeling groundwater flow, but their performance depends on data availability. Physics‐informed neural networks (PINNs) help to reduce the reliance of DLNNs on data by integrating physical laws into the training process. This approach is increasingly used in applications related to
Adhish Virupaksha   +5 more
wiley   +1 more source

Toral symmetries of collapsed ancient solutions to the homogeneous Ricci flow

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract Collapsed ancient solutions to the homogeneous Ricci flow on compact manifolds occur only on the total space of principal torus bundles. Under an algebraic assumption that guarantees flowing through diagonal metrics and a tameness assumption on the collapsing directions, we prove that such solutions have additional symmetries, that is, they ...
Anusha M. Krishnan   +2 more
wiley   +1 more source

Numerical Approximation of a PDE‐Constrained Optimization Problem that Appears in Data‐Driven Computational Mechanics

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 4, 28 February 2026.
ABSTRACT We investigate an optimization problem that arises when working within the paradigm of Data‐Driven Computational Mechanics. In the context of the diffusion‐reaction problem, such an optimization problem seeks the continuous primal fields (gradient and flux) that are closest to some predefined discrete fields taken from a material data set. The
Pedro B. Bazon   +3 more
wiley   +1 more source

Multi‐Scale Electrical Conductivity Model of the Contiguous United States

open access: yesGeophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract The completion of the Magnetotelluric (MT) USArray across the contiguous US enables continental‐scale 3‐D imaging of the asthenosphere‐lithosphere electrical structure. We present a novel 3‐D model of the contiguous United States (MECMUS), derived from a single inversion of the now‐completed USMTArray data set.
Federico D. Munch, Alexander Grayver
wiley   +1 more source

Elliptic PDE learning is provably data-efficient. [PDF]

open access: yesProc Natl Acad Sci U S A, 2023
Boullé N, Halikias D, Townsend A.
europepmc   +1 more source

Mathematical Foundations of Adaptive Isogeometric Analysis. [PDF]

open access: yesArch Comput Methods Eng, 2022
Buffa A   +4 more
europepmc   +1 more source

On the Uniqueness of Schwarzschild-de Sitter Spacetime. [PDF]

open access: yesArch Ration Mech Anal, 2023
Borghini S, Chruściel PT, Mazzieri L.
europepmc   +1 more source

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