Results 1 to 10 of about 26,676 (164)

Hamiltonian Computational Chemistry: Geometrical Structures in Chemical Dynamics and Kinetics [PDF]

open access: yesEntropy
The common geometrical (symplectic) structures of classical mechanics, quantum mechanics, and classical thermodynamics are unveiled with three pictures.
Stavros C. Farantos
doaj   +2 more sources

Higher-rank tensor non-Abelian field theory: Higher-moment or subdimensional polynomial global symmetry, algebraic variety, Noether's theorem, and gauging

open access: yesPhysical Review Research, 2021
With a view toward a fracton theory in condensed matter, we introduce a higher-moment polynomial degree-p global symmetry, acting on complex scalar/vector/tensor fields (e.g., ordinary or vector global symmetry for p=0 and p=1 respectively).
Juven Wang, Kai Xu, Shing-Tung Yau
doaj   +1 more source

Local Conditions for Triangulating Submanifolds of Euclidean Space [PDF]

open access: yesDiscrete & Computational Geometry, 2020
AbstractWe consider the following setting: suppose that we are given a manifold M in $${\mathbb {R}}^d$$ R d with positive reach. Moreover assume that we have an embedded simplical complex $${\mathcal {A}}$$
Boissonnat, Jean-Daniel   +4 more
openaire   +1 more source

Principal Polynomial Nonlinear Process Fault Detection Based on Neighborhood Preserving Embedding

open access: yesShanghai Jiaotong Daxue xuebao, 2021
Aimed at the problem of high dimension and nonlinearity of variable data in chemical process, a process fault detection algorithm based on neighborhood preserving embedding(NPE )-principal polynomial analysis (PPA) is proposed in this paper.
LI Yuan, YAO Zongyu
doaj   +1 more source

Geometrical modeling and numerical analysis of edge dislocation

open access: yesNihon Kikai Gakkai ronbunshu, 2021
In this study, we conduct modeling and numerical analysis of a straight edge dislocation in a three-dimensional geometrically nonlinear elastic medium.
Shunsuke KOBAYASHI, Ryuichi TARUMI
doaj   +1 more source

Automorphisms of Submanifolds

open access: yesAdvances in Difference Equations, 2010
The paper deals with local symmetries of the infinite-order jet space of C∞-smooth n-dimensional submanifolds in ℝm+n. Transformations under consideration are the most general possible.
Veronika Chrastinová   +1 more
doaj   +2 more sources

Localization for Invariant Submanifolds [PDF]

open access: yesMathematical Research Letters, 2001
Let \( M \) be a smooth manifold with an equivariant formal circle action and \( W \) an invariant submanifold of \( M \) which does not contain the fixed points of the action. The author presents a new localization theorem which expresses the integration over \( W/S ^1 \) in terms of the integration over the set of fixed points of the action.
openaire   +2 more sources

Semi-Slant Submanifolds of a Locally Product Manifold [PDF]

open access: yesgmj, 2005
Abstract In the present paper, we define and study the slant, bi-slant and semi-slant submanifolds of a locally product manifold. We give some characterization theorems for slant submanifolds and semi-slant submanifolds. Moreover, we obtain integrability conditions for the distributions which are involved in the definition of semi-slant ...
Li, Hongxia, Liu, Ximin
openaire   +2 more sources

Local rigidity, symplectic homeomorphisms, and coisotropic submanifolds [PDF]

open access: yesBulletin of the London Mathematical Society, 2022
We introduce the notion of a point on a locally closed subset of a symplectic manifold being "locally rigid" with respect to that subset, prove that this notion is invariant under symplectic homeomorphisms, and show that coisotropic submanifolds are distinguished among all smooth submanifolds by the property that all of their points are locally rigid ...
openaire   +3 more sources

Generic submanifolds of a locally conformal Kaehler manifold‐II [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1991
A submanifold \(M\) of an almost Hermitian manifold \(\overline {M}\) is called a generic submanifold if its maximal complex subspaces form a differential distribution (cf. [\textit{B. Y. Chen}, Monatsh. Math. 91, 257- 274 (1981; Zbl 0451.53041)]).
M. Hasan Shahid, Kouei Sekigawa
openaire   +2 more sources

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