Results 11 to 20 of about 1,438,169 (315)

On generalized Berwald manifolds: extremal compatible linear connections, special metrics and low dimensional spaces [PDF]

open access: yesAUT Journal of Mathematics and Computing, 2021
The notion of generalized Berwald manifolds goes back to V. Wagner [60]. They are Finsler manifolds admitting linear connections on the base manifold such that the parallel transports preserve the Finslerian length of tangent vectors (compatibility ...
Csaba Vincze
doaj   +1 more source

Stability design of structures with semi-rigid connections [PDF]

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2010
The paper points out to the differences of the First order theory and Second order theory and of the significance in practical calculations. The paper presents theoretical foundations and expressions of calculations of impacts on the stability of ...
Igić Tomislav   +4 more
doaj   +1 more source

A note on the Hamiltonian structure of transgression forms

open access: yesJournal of High Energy Physics, 2023
By incorporating two gauge connections, transgression forms provide a generalization of Chern-Simons actions that are genuinely gauge-invariant on bounded manifolds.
Pablo Pais   +2 more
doaj   +1 more source

A generalized 4d Chern-Simons theory

open access: yesJournal of High Energy Physics, 2023
A generalization of the 4d Chern-Simons theory action introduced by Costello and Yamazaki is presented. We apply general arguments from symplectic geometry concerning the Hamiltonian action of a symmetry group on the space of gauge connections defined on
David M. Schmidtt
doaj   +1 more source

David Loye, Thank You for “Telling The New Story”

open access: yesInterdisciplinary Journal of Partnership Studies, 2022
This is an account of a creative hero, whom we shall dearly miss; a scholar, activist, scientist, writer, and creative spirit, who heard the call and took the risks to offer a truth that was eclipsed for 100 years, i.e., “Darwin’s Lost Theory.” This ...
Ruth Richards
doaj   +1 more source

Boundary value problems for the Lamé-Navier system in fractal domains

open access: yesAIMS Mathematics, 2021
The aim of this paper is to establish a representation formula for the solutions of the Lamé-Navier system in linear elasticity theory. We also study boundary value problems for such a system in a bounded domain $ \Omega\subset {\mathbb R}^3 $, allowing ...
Ricardo Abreu Blaya   +3 more
doaj   +1 more source

Riemannian Geometry of Noncommutative Surfaces [PDF]

open access: yes, 2008
A Riemannian geometry of noncommutative n-dimensional surfaces is developed as a first step towards the construction of a consistent noncommutative gravitational theory.
A. Tureanu   +7 more
core   +2 more sources

Connection theory on differentiable fibre bundles: A concise introduction

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
The paper contains a partial review on the general connection theory on differentiable fibre bundles. Particular attention is paid on (linear) connections on vector bundles.
Bozhidar Z. Iliev
doaj   +1 more source

Theory of teaching: good traditions, old traps, new perspectives. [PDF]

open access: yesStudia z Teorii Wychowania, 2021
The article is an attempt to diagnose the condition of the Polish theory of teaching in a temporal perspective. The starting point is the identification of three main strengths of the interwar theory of teaching: the interdisciplinarity of analyses ...
Dorota Klus-Stańska
doaj   +1 more source

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