Results 11 to 20 of about 72,124 (260)

Non-reductive spaces with equiaffine connections of nonzero curvature [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2021
The introduction of this article states the object of our investigation which is structures on homogeneous spaces. The problem of establishing links between the curvature and the structure of a manifold is one of the important problems of geometry.
Mozhey, Natal’ya Pavlovna
doaj   +1 more source

Classification of Holomorphic Functions as Pólya Vector Fields via Differential Geometry

open access: yesMathematics, 2021
We review Pólya vector fields associated to holomorphic functions as an important pedagogical tool for making the complex integral understandable to the students, briefly mentioning its use in other dimensions.
Lucian-Miti Ionescu   +2 more
doaj   +1 more source

Four lectures on Euler integrals

open access: yesSciPost Physics Lecture Notes, 2023
These lecture notes provide a self-contained introduction to Euler integrals, which are frequently encountered in applications. In particle physics, they arise as Feynman integrals or string amplitudes.
Saiei-Jaeyeong Matsubara-Heo, Sebastian Mizera, Simon Telen
doaj   +1 more source

On the Affine Image of a Rational Surface of Revolution

open access: yesMathematics, 2020
We study the properties of the image of a rational surface of revolution under a nonsingular affine mapping. We prove that this image has a notable property, namely that all the affine normal lines, a concept that appears in the context of affine ...
Juan G. Alcázar
doaj   +1 more source

On intrinsic normalizations of semi-non-holonomic hypercomplexes SNGr(1, n, 2n-3) in affine space

open access: yesLietuvos Matematikos Rinkinys, 1998
In this paper the differential geometry of semi-non-holonomic hypercomplexes in n-dimensional affine space is constructed in an invariant analytic form. The differential neighbourhoods of first two orders are studied.
Janina Staišienė
doaj   +3 more sources

Lie algebras of differentiations of linear algebras over a field

open access: yesДифференциальная геометрия многообразий фигур, 2021
In this paper, we study a system of linear equations that define the Lie algebra of differentiations DerA of an arbitrary finite-dimensional linear algebra over a field.
A. Ya. Sultanov   +2 more
doaj   +1 more source

AV-differential geometry and Newtonian mechanics [PDF]

open access: yes, 2006
A frame independent formulation of analytical mechanics in the Newtonian space-time is presented The differential geometry of affine values i.e., the differential geometry in which affine bundles replace vector bundles and sections of one dimensional ...
Grabowska, Katarzyna, Urbanski, Pawel
core   +1 more source

Reference shape of bodies with enhanced kinematics. Part II. Second gradient and microstructure

open access: yesВестник Самарского университета: Естественнонаучная серия, 2023
The work develops differential-geometric methods for modeling finite incompatible deformations of hyperelastic solids with enhanced kinematics. The response of such bodies, along with the standard kinematic field represented by the deformation gradient ...
Konstantin G. Koifman
doaj   +1 more source

On a connection with a torsion non-tensor and a curvature non-tensor

open access: yesДифференциальная геометрия многообразий фигур, 2023
This paper relates to differential geometry, and the research technique is based on G. F. Laptev’s method of extensions and envelopments, which generalizes E. Cartan's method of moving frame and exterior forms.
K. V. Polyakova
doaj   +1 more source

AFFINE GEOMETRY OF STRATA OF DIFFERENTIALS [PDF]

open access: yesJournal of the Institute of Mathematics of Jussieu, 2017
Affine varieties among all algebraic varieties have simple structures. For example, an affine variety does not contain any complete algebraic curve. In this paper, we study affine-related properties of strata of $k$ -differentials on smooth curves which parameterize sections of the $k$
openaire   +2 more sources

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