Results 11 to 20 of about 144,513 (307)

Scale Transformations in Metric-Affine Geometry [PDF]

open access: yesUniverse, 2019
This article presents an exhaustive classification of metric-affine theories according to their scale symmetries. First it is clarified that there are three relevant definitions of a scale transformation.
Damianos Iosifidis, Tomi Koivisto
doaj   +5 more sources

Affine Transformations and Analytic Capacities [PDF]

open access: bronzeTransactions of the American Mathematical Society, 1995
Analytic capacities are set functions defined on the plane which may be used in the study of removable singularities, boundary smoothness and approximation of analytic functions belonging to some function space. The symmetric concrete Banach spaces form a class of function spaces that includes most spaces usually studied.
Thomas Dowling, Anthony G. O’Farrell
openalex   +4 more sources

Cremona Transformations that are Affine Automorphisms [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1984
We present the condition on which a Cremona transformation induces an automorphism of A 2 {{\mathbf {A}}^2} .
Hisao Yoshihara
openalex   +3 more sources

Flat affine manifolds and their transformations [PDF]

open access: yesmanuscripta mathematica, 2020
More references have been added. In particular, the reference to Jack Vey's thesis. We have corrected some typos and included some other changes.
Medina, Alberto   +2 more
openaire   +5 more sources

Reversibility of affine transformations

open access: yesProceedings of the Edinburgh Mathematical Society, 2023
AbstractAn element g in a group G is called reversible if g is conjugate to g−1 in G. An element g in G is strongly reversible if g is conjugate to g−1 by an involution in G. The group of affine transformations of $\mathbb D^n$ may be identified with the semi-direct product $\mathrm{GL}(n, \mathbb D) \ltimes \mathbb D^n $, where $\mathbb D:=\mathbb R, \
Krishnendu Gongopadhyay   +2 more
openaire   +2 more sources

Extreme affine transformations [PDF]

open access: yesCommunications in Mathematical Physics, 1976
We classify the extreme points of the compact convex set of affine maps of IR n which map into itself the closed unit ball. This work is a preliminary step towards solving the problem of finding the extreme points of the compact convex set of affine maps of theN×N density matrices (dynamical maps of anN-level system) and forn=3 furnishes the solution ...
Gorini, Vittorio, Sudarshan, E. C. G.
openaire   +4 more sources

Persistence landscapes of affine fractals

open access: yesDemonstratio Mathematica, 2022
We develop a method for calculating the persistence landscapes of affine fractals using the parameters of the corresponding transformations. Given an iterated function system of affine transformations that satisfies a certain compatibility condition, we ...
Catanzaro Michael J.   +2 more
doaj   +1 more source

Sifat Preservasi Lingkaran dan Garis Pada Transformasi Möbius

open access: yesJambura Journal of Mathematics, 2022
This article discusses Möbius transformation from the point of view of algebra to describe one of its geometric properties, i.e. preserving circles and lines in complex planes.
Guntur Maulana Muhammad   +2 more
doaj   +1 more source

Affine Geometrical Region CNN for Object Tracking

open access: yesIEEE Access, 2020
The state-of-the-art trackers using deep learning technology have little special strategy to gain the bounding box well when the target suffers drastic geometric deformation.
Yinghong Xie, Jie Shen, Chengdong Wu
doaj   +1 more source

Chinese Character Component Deformation Based on AHP

open access: yesApplied Sciences, 2022
Since Chinese characters are composed of components, deforming the components in a small number of existing calligraphy characters to generate new characters is an effective method to produce a Chinese character library in the same style.
Tian Chen, Fang Yang, Xiang Gao
doaj   +1 more source

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