Results 11 to 20 of about 2,884 (298)

Some Progress in Conformal Geometry

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2007
This is a survey paper of our current research on the theory of partial differential equations in conformal geometry. Our intention is to describe some of our current works in a rather brief and expository fashion.
Sun-Yung A. Chang, Jie Qing, Paul Yang
doaj   +4 more sources

Conformal Vector Fields and the De-Rham Laplacian on a Riemannian Manifold

open access: yesMathematics, 2021
We study the effect of a nontrivial conformal vector field on the geometry of compact Riemannian spaces. We find two new characterizations of the m-dimensional sphere Sm(c) of constant curvature c.
Amira Ishan   +2 more
doaj   +2 more sources

Nonlocality, no-signalling, and Bellʼs theorem investigated by Weyl conformal differential geometry [PDF]

open access: yesPhysica Scripta, 2014
The principles and methods of the Conformal Quantum Geometrodynamics (CQG) based on the Weyl's differential geometry are presented. The theory applied to the case of the relativistic single quantum spin 1/2 leads a novel and unconventional derivation of Dirac's equation.
Francesco De Martini, SANTAMATO, ENRICO
openaire   +4 more sources

Differential Invariants of Conformal and Projective Surfaces

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2007
We show that, for both the conformal and projective groups, all the differential invariants of a generic surface in three-dimensional space can be written as combinations of the invariant derivatives of a single differential invariant. The proof is based
Evelyne Hubert, Peter J. Olver
doaj   +1 more source

Differential inclusions for the Schouten tensor and nonlinear eigenvalue problems in conformal geometry

open access: yesAdvances in Mathematics, 2023
Let $g_0$ be a smooth Riemannian metric on a closed manifold $M^n$ of dimension $n\geq 3$. We study the existence of a smooth metric $g$ conformal to $g_0$ whose Schouten tensor $A_g$ satisfies the differential inclusion $λ(g^{-1}A_g)\inΓ$ on $M^n$, where $Γ\subset\mathbb{R}^n$ is a cone satisfying standard assumptions.
Duncan, JAJ, Nguyen, L
openaire   +5 more sources

Exploring Conformal Soliton Structures in Tangent Bundles with Ricci-Quarter Symmetric Metric Connections

open access: yesMathematics
In this study, we investigate the tangent bundle TM of an n-dimensional (pseudo-)Riemannian manifold M equipped with a Ricci-quarter symmetric metric connection ∇˜.
Yanlin Li, Aydin Gezer, Erkan Karakas
doaj   +2 more sources

Motions of Curves in the Projective Plane Inducing the Kaup-Kupershmidt Hierarchy [PDF]

open access: yes, 2012
The equation of a motion of curves in the projective plane is deduced. Local flows are defined in terms of polynomial differential functions. A family of local flows inducing the Kaup-Kupershmidt hierarchy is constructed.
Musso, Emilio, Emilio Musso, Musso, E.
core   +1 more source

Conformal differential geometry of a subspace [PDF]

open access: yesTransactions of the American Mathematical Society, 1944
Not ...
openaire   +2 more sources

Chiral rings, Futaki invariants, plethystics, and Gröbner bases

open access: yesJournal of High Energy Physics, 2021
We study chiral rings of 4d N $$ \mathcal{N} $$ = 1 supersymmetric gauge theories via the notion of K-stability. We show that when using Hilbert series to perform the computations of Futaki invariants, it is not enough to only include the test symmetry ...
Jiakang Bao, Yang-Hui He, Yan Xiao
doaj   +1 more source

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