Results 21 to 30 of about 111,612 (248)

Local manifold learning and its link to domain-based physics knowledge

open access: yesApplications in Energy and Combustion Science, 2023
In many reacting flow systems, the thermo-chemical state-space is known or assumed to evolve close to a low-dimensional manifold (LDM). Various approaches are available to obtain those manifolds and subsequently express the original high-dimensional ...
Kamila Zdybał   +5 more
doaj   +1 more source

Revisiting the classification of homogeneous 3-Sasakian and quaternionic Kähler manifolds [PDF]

open access: yesEuropean Journal of Mathematics, 2021
We provide a new, self-contained proof of the classification of homogeneous 3-Sasakian manifolds, which was originally obtained by Boyer et al. (J Reine Angew Math 455:183–220, [ 10 ]).
Oliver Goertsches   +2 more
semanticscholar   +1 more source

Geodesic complexity of homogeneous Riemannian manifolds

open access: yesAlgebraic & Geometric Topology, 2023
We study the geodesic motion planning problem for complete Riemannian manifolds and investigate their geodesic complexity, an integer-valued isometry invariant introduced by D Recio-Mitter. Using methods from Riemannian geometry, we establish new lower and upper bounds on geodesic complexity and compute its value for certain classes of examples with a ...
Mescher, Stephan, Stegemeyer, Maximilian
openaire   +4 more sources

Group manifolds and homogeneous spaces with HKT geometry: The role of automorphisms

open access: yesNuclear Physics B, 2020
We present a new simple proof of the fact that certain group manifolds as well as certain homogeneous spaces G/H of dimension 4n admit a triple of integrable complex structures that satisfy the quaternionic algebra and are covariantly constant with ...
A.V. Smilga
doaj   +1 more source

Reduction of Homogeneous Pseudo-Kähler Structures by One-Dimensional Fibers

open access: yesAxioms, 2020
We study the reduction procedure applied to pseudo-Kähler manifolds by a one dimensional Lie group acting by isometries and preserving the complex tensor. We endow the quotient manifold with an almost contact metric structure. We use this fact to connect
José Luis Carmona Jiménez   +1 more
doaj   +1 more source

Dynamics in a Predator–Prey Model with Cooperative Hunting and Allee Effect

open access: yesMathematics, 2021
This paper deals with a diffusive predator–prey model with two delays. First, we consider the local bifurcation and global dynamical behavior of the kinetic system, which is a predator–prey model with cooperative hunting and Allee effect.
Yanfei Du, Ben Niu, Junjie Wei
doaj   +1 more source

Type I Almost-Homogeneous Manifolds of Cohomogeneity One—IV

open access: yesAxioms, 2018
This paper is one of a series in which we generalize our earlier results on the equivalence of existence of Calabi extremal metrics to the geodesic stability for any type I compact complex almost homogeneous manifolds of cohomogeneity one. In this paper,
Zhuang-Dan Daniel Guan   +2 more
doaj   +1 more source

Pseudoconvex domains spread over complex homogeneous manifolds [PDF]

open access: yesManuscripta Mathematica, 2012
Using the concept of inner integral curves defined by Hirschowitz we generalize a recent result by Kim, Levenberg and Yamaguchi concerning the obstruction of a pseudoconvex domain spread over a complex homogeneous manifold to be Stein. This is then applied to study the holomorphic reduction of pseudoconvex complex homogeneous manifolds X=G/H. Under the
Gilligan, Bruce   +2 more
openaire   +2 more sources

Linear invariants of complex manifolds and their plurisubharmonic variations [PDF]

open access: yesJournal of Functional Analysis, 2019
For a bounded domain $D$ and a real number $p>0$, we denote by $A^p(D)$ the space of $L^p$ integrable holomorphic functions on $D$, equipped with the $L^p$- pseudonorm.
F. Deng   +3 more
semanticscholar   +1 more source

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