Results 111 to 120 of about 115,622 (258)

Tzitzeica-Type centro-affine invariants in Minkowski spaces

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012
In this article we introduce three centro-affine invariant functions in Minkowski spaces. Tzitzeica curves and Tzitzeica surfaces may be defined in this new context.
Bobe Alexandru   +2 more
doaj   +1 more source

Asymptotic Stability of Minkowski Space-Time with Non-compactly Supported Massless Vlasov Matter. [PDF]

open access: yesArch Ration Mech Anal, 2021
Bigorgne L   +4 more
europepmc   +1 more source

Christoffel and Minkowski problems in Minkowski space

open access: yesSéminaire de théorie spectrale et géométrie, 2015
For convex sets in the Lorentzian Minkowski space bounded by space-like hyperplanes, it is possible to define area measures, similarly to the classical definition for convex bodies in the Euclidean space. Here the measures are defined on the hyperbolic space rather than on the round sphere.
openaire   +3 more sources

Explicit height estimates for CM curves of genus 2

open access: yesTransactions of the London Mathematical Society, Volume 12, Issue 1, December 2025.
Abstract In this paper, we make explicit the constants of Habegger and Pazuki's work from 2017 on bounding the discriminant of cyclic Galois CM fields corresponding to genus 2 curves with CM and potentially good reduction outside a predefined set of primes. We also simplify some of the arguments.
Linda Frey   +2 more
wiley   +1 more source

MRI for biology‐guided radiation therapy: Are we there yet? A summary of the 2024 ISMRM member‐initiated session

open access: yesMagnetic Resonance in Medicine, Volume 94, Issue 4, Page 1672-1683, October 2025.
Abstract At the 2024 ISMRM Annual Meeting in Singapore, a member‐initiated session on MRI for biology‐guided radiation therapy (RT), endorsed by the ISMRM MR in RT Study Group, was successfully organized. The session convened a diverse group of global experts in quantitative MRI for RT, who presented the latest research on the technical development and
Sirisha Tadimalla   +12 more
wiley   +1 more source

Gauge theory on ρ-Minkowski space-time

open access: yesJournal of High Energy Physics
We construct a gauge theory model on the 4-dimensional ρ-Minkowski space-time, a particular deformation of the Minkowski space-time recently considered. The corresponding star product results from a combination of Weyl quantization map and properties of ...
Valentine Maris, Jean-Christophe Wallet
doaj   +1 more source

Direct Bethe-Salpeter solutions in Minkowski space

open access: yesEPJ Web of Conferences, 2016
We review a method to directly solve the Bethe-Salpeter equation in Minkowski space, both for bound and scattering states. It is based on a proper treatment of the many singularities which appear in the kernel and propagators.
Carbonell J., Karmanov V.A.
doaj   +1 more source

Automated Classification of Skin Diseases Using Microscopic Images: A Machine Learning Approach

open access: yesConcurrency and Computation: Practice and Experience, Volume 37, Issue 21-22, 25 September 2025.
ABSTRACT This study presents a machine learning‐based approach for the automated classification of skin diseases, specifically targeting morphea and lichen sclerosus, using microscopic images. The proposed method involves a systematic workflow, including image preprocessing techniques such as resizing, Reinhard normalization, Gaussian filtering, and ...
Zehra Karapinar Senturk   +3 more
wiley   +1 more source

Numerical data generation for building machine learning models for permeability estimation of fibrous structures

open access: yesPolymer Composites, Volume 46, Issue S1, Page S104-S120, 10 September 2025.
Data‐driven emulators can estimate the permeability in less than 10% of the time compared to numerical permeability determination. Abstract The challenge of developing effective multiscale flow simulation methods is to take into account all relevant physical effects from fiber to component level, but remain manageable in terms of computational effort ...
Tim Schmidt   +5 more
wiley   +1 more source

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