Results 51 to 60 of about 4,106,348 (385)

Exterior Differential Systems for Yang-Mills Theories [PDF]

open access: yes, 2008
Exterior differential systems are given, and their Cartan characters calculated, for Maxwell and SU(2)-Yang-Mills equations in dimensions from three to six.Comment: This is a contribution to the Special Issue "Elie Cartan and Differential Geometry ...
Estabrook, Frank B.
core   +4 more sources

To the 85th Anniversary of the Department of Geometry of ISU

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2023
The article provides a brief overview of the main directions of the history of scientific and pedagogical activity and the achievements of the Department of Geometry of Irkutsk State University for 1938-2012 years.
O.V. Kuzmin, L. A. Osipenko
doaj   +1 more source

Nonlinear Observability Algorithms with Known and Unknown Inputs: Analysis and Implementation

open access: yesMathematics, 2020
The observability of a dynamical system is affected by the presence of external inputs, either known (such as control actions) or unknown (disturbances).
Nerea Martínez, Alejandro F. Villaverde
doaj   +1 more source

Differential geometry via infinitesimal displacements

open access: yes, 2015
We present a new formulation of some basic differential geometric notions on a smooth manifold M, in the setting of nonstandard analysis. In place of classical vector fields, for which one needs to construct the tangent bundle of M, we define a prevector
Katz, Mikhail G., Nowik, Tahl
core   +2 more sources

Differential Geometry of Group Lattices

open access: yes, 2002
In a series of publications we developed "differential geometry" on discrete sets based on concepts of noncommutative geometry. In particular, it turned out that first order differential calculi (over the algebra of functions) on a discrete set are in ...
Aristophanes Dimakis   +31 more
core   +1 more source

Differential Geometry and mechanics: Applications to Chaotic Dynamical Systems [PDF]

open access: yesInternational Journal of Bifurcation and Chaos in Applied Sciences and Engineering, 2014
The aim of this article is to highlight the interest to apply Differential Geometry and Mechanics concepts to chaotic dynamical systems study. Thus, the local metric properties of curvature and torsion will directly provide the analytical expression of ...
J. Ginoux, B. Rossetto
semanticscholar   +1 more source

On organizing principles of Discrete Differential Geometry. Geometry of spheres

open access: yes, 2006
Discrete differential geometry aims to develop discrete equivalents of the geometric notions and methods of classical differential geometry. In this survey we discuss the following two fundamental Discretization Principles: the transformation group ...
Bobenko, Alexander I., Suris, Yuri B.
core   +2 more sources

Functional variation among LPMOs revealed by the inhibitory effects of cyanide and buffer ions

open access: yesFEBS Letters, EarlyView.
This study addresses the inhibition of lytic polysaccharide monooxygenases (LPMOs) by cyanide and explains how and why the magnitude of observed inhibitory effects depends on the way LPMO reactions are setup and on the type of LPMO. Enzymes known as lytic polysaccharide monooxygenases (LPMOs) are mono‐copper polysaccharide‐degrading peroxygenases that ...
Ole Golten   +10 more
wiley   +1 more source

Heat Kernel Embeddings, Differential Geometry and Graph Structure

open access: yesAxioms, 2015
In this paper, we investigate the heat kernel embedding as a route to graph representation. The heat kernel of the graph encapsulates information concerning the distribution of path lengths and, hence, node affinities on the graph; and is found by ...
Hewayda ElGhawalby, Edwin R. Hancock
doaj   +1 more source

Principles of Differential Geometry

open access: yesarXiv: History and Overview, 2016
The present text is a collection of notes about differential geometry prepared to some extent as part of tutorials about topics and applications related to tensor calculus. They can be regarded as continuation to the previous notes on tensor calculus as they are based on the materials and conventions given in those documents.
openaire   +3 more sources

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