Results 21 to 30 of about 7,321 (260)

From 5d flat connections to 4d fluxes (the art of slicing the cone)

open access: yesJournal of High Energy Physics, 2023
We compute the Coulomb branch partition function of the 4d N $$ \mathcal{N} $$ = 2 vector multiplet on closed simply-connected quasi-toric manifolds B.
Jim Lundin, Roman Mauch, Lorenzo Ruggeri
doaj   +1 more source

An Alzheimer’s disease category progression sub-grouping analysis using manifold learning on ADNI

open access: yesScientific Reports, 2023
Many current statistical and machine learning methods have been used to explore Alzheimer’s disease (AD) and its associated patterns that contribute to the disease.
Dustin van der Haar   +4 more
doaj   +1 more source

Practical Stability with Respect to h-Manifolds for Impulsive Control Functional Differential Equations with Variable Impulsive Perturbations

open access: yesMathematics, 2019
The present paper is devoted to the problems of practical stability with respect to h-manifolds for impulsive control differential equations with variable impulsive perturbations.
Gani Stamov   +3 more
doaj   +1 more source

On G/H geometry and its use in M-theory compactifications [PDF]

open access: yes, 1999
The Riemannian geometry of coset spaces is reviewed, with emphasis on its applications to supergravity and M-theory compactifications. Formulae for the connection and curvature of rescaled coset manifolds are generalized to the case of nondiagonal ...
Castellani   +12 more
core   +2 more sources

Bucshbaum simplicial posets [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
The family of Buchsbaum simplicial posets generalizes the family of simplicial cell manifolds. The $h'-$vector of a simplicial complex or simplicial poset encodes the combinatorial and topological data of its face numbers and the reduced Betti numbers of
Jonathan Browder, Steven Klee
doaj   +1 more source

Nambu representation of an extended Lorenz model with viscous heating [PDF]

open access: yes, 2012
We consider the Nambu and Hamiltonian representations of Rayleigh-Benard convection with a nonlinear thermal heating effect proportional to the Eckert number (Ec).
Axenides   +31 more
core   +2 more sources

Contact Semi-Riemannian Structures in CR Geometry: Some Aspects

open access: yesAxioms, 2019
There is one-to-one correspondence between contact semi-Riemannian structures ( η , ξ , φ , g ) and non-degenerate almost CR structures ( H , ϑ , J ) .
Domenico Perrone
doaj   +1 more source

A strong pair correlation bound implies the CLT for Sinai Billiards [PDF]

open access: yes, 2009
For Dynamical Systems, a strong bound on multiple correlations implies the Central Limit Theorem (CLT) [ChMa]. In Chernov's paper [Ch2], such a bound is derived for dynamically Holder continuous observables of dispersing Billiards.
A. Lasota   +22 more
core   +1 more source

Topological field theories induced by twisted R-Poisson structure in any dimension

open access: yesJournal of High Energy Physics, 2021
We construct a class of topological field theories with Wess-Zumino term in spacetime dimensions ≥ 2 whose target space has a geometrical structure that suitably generalizes Poisson or twisted Poisson manifolds.
Athanasios Chatzistavrakidis
doaj   +1 more source

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