Results 11 to 20 of about 56,617 (265)

The Lorentz Group Using Conformal Geometric Algebra and Split Quaternions for Color Image Processing: Theory and Practice

open access: yesIEEE Access, 2023
The processing of color images is of great interest, because the human perception of color is a very complex process, still not well understood. In this article, firstly the authors present an analysis of the well-known mathematical methods used to model
Eduardo Bayro-Corrochano   +2 more
doaj   +1 more source

The global gauge group structure of F-theory compactification with U(1)s

open access: yesJournal of High Energy Physics, 2018
We show that F-theory compactifications with abelian gauge factors generally exhibit a non-trivial global gauge group structure. The geometric origin of this structure lies with the Shioda map of the Mordell-Weil generators.
Mirjam Cvetič, Ling Lin
doaj   +1 more source

Gauge symmetry breaking with fluxes and natural Standard Model structure from exceptional GUTs in F-theory

open access: yesJournal of High Energy Physics, 2022
We give a general description of gauge symmetry breaking using vertical and remainder fluxes in 4D F-theory models. The fluxes can break a geometric gauge group to a smaller group and induce chiral matter, even when the larger group admits no chiral ...
Shing Yan Li, Washington Taylor
doaj   +1 more source

Weierstrass points on modular curves X0(N) fixed by the Atkin–Lehner involutions [PDF]

open access: yesArab Journal of Mathematical Sciences, 2023
Purpose – The authors have determined whether the points fixed by all the full and the partial Atkin–Lehner involutions WQ on X0(N) for N ≤ 50 are Weierstrass points or not.
Mustafa Bojakli, Hasan Sankari
doaj   +1 more source

Fermion geometry and the renormalization of the Standard Model Effective Field Theory

open access: yesJournal of High Energy Physics, 2023
The geometry of field space governs on-shell scattering amplitudes. We formulate a geometric description of effective field theories which extends previous results for scalars and gauge fields to fermions.
Benoît Assi   +4 more
doaj   +1 more source

Selective Survey on Spaces of Closed Subgroups of Topological Groups

open access: yesAxioms, 2018
We survey different topologizations of the set S ( G ) of closed subgroups of a topological group G and demonstrate some applications using Topological Groups, Model Theory, Geometric Group Theory, and Topological Dynamics.
Igor V. Protasov
doaj   +1 more source

Fluxes in exceptional field theory and threebrane sigma-models

open access: yesJournal of High Energy Physics, 2019
Starting from a higher Courant bracket associated to exceptional generalized geometry, we provide a systematic derivation of all types of fluxes and their Bianchi identities for four-dimensional compactifications of M-theory.
Athanasios Chatzistavrakidis   +3 more
doaj   +1 more source

From Practice to New Concepts: Geometric Properties of Groups

open access: yesPhilosophia Scientiæ, 2012
The paper aims to show how mathematical practice, in particular with visual representations, can lead to new mathematical results. The argument is based on a case study from a relatively recent and promising mathematical subject—geometric group theory ...
Irina Starikova
doaj   +1 more source

Polystable bundles and representations of their automorphisms

open access: yesComplex Manifolds, 2022
Using a quasi-linear version of Hodge theory, holomorphic vector bundles in a neighbourhood of a given polystable bundle on a compact Kähler manifold are shown to be (poly)stable if and only if their corresponding classes are (poly)stable in the sense of
Buchdahl Nicholas, Schumacher Georg
doaj   +1 more source

Injective Hulls of Infinite Totally Split-Decomposable Metric Spaces

open access: yesAxioms
We extend the theory of splits in finite metric spaces to infinite ones. Within this more general framework, we investigate the class of spaces having metrics that are integer-valued and totally split-decomposable, as well as the polyhedral complex ...
Maël Pavón
doaj   +1 more source

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