Results 1 to 10 of about 5,010 (185)

Collineation group as a subgroup of the symmetric group [PDF]

open access: hybridOpen Mathematics, 2013
Let ψ be the projectivization (i.e., the set of one-dimensional vector subspaces) of a vector space of dimension ≥ 3 over a field. Let H be a closed (in the pointwise convergence topology) subgroup of the permutation group $\mathfrak{S}_\psi $ of the set
Bogomolov Fedor, Rovinsky Marat
doaj   +4 more sources

Genome-wide identification and characterization of the bHLH gene family and analysis of their potential relevance to chlorophyll metabolism in Raphanus sativus L [PDF]

open access: yesBMC Genomics, 2022
Background Green-fleshed radish (Raphanus sativus L.) is an economically important root vegetable of the Brassicaceae family, and chlorophyll accumulates in its root tissues.
Ruihua Wang   +4 more
doaj   +2 more sources

Collineation groups of translation planes of small dimension [PDF]

open access: goldInternational Journal of Mathematics and Mathematical Sciences, 1981
A subgroup of the linear translation complement of a translation plane is geometrically irreducible if it has no invariant lines or subplanes. A similar definition can be given for “geometrically primitive”.
T. G. Ostrom
doaj   +2 more sources

Finding the Collineation between Two Projective Reconstructions

open access: greenComputer Vision and Image Understanding, 1999
G. Csurka, David Demirdjian, Radu Horaud
openalex   +3 more sources

Finite collineation groups and birational rigidity [PDF]

open access: yesSelecta Mathematica, 2017
We classify finite groups G in PGL4(C)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt ...
I. Cheltsov, C. Shramov
semanticscholar   +1 more source

Collineation measurement: A method for constructing the imperial citadel of Thang Long in harmony with nature

open access: yesFrontiers of Architectural Research, 2022
The Imperial Citadel of Thang Long is a crucial case in ancient Vietnam's planning and design history. Although historical materials indicate that the orientation of the Imperial Citadel of Thang Long has a dialectical unity relationship with the ...
Theanh Dinh, Xiaogeng Ren
doaj   +1 more source

2-elements in an Autotopism Group of a Semifield Projective Plane

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2022
We investigate the well-known hypothesis of D.R. Hughes that the full collineation group of non-Desarguesian semifield projective plane of a finite order is solvable (the question 11.76 in Kourovka notebook was written down by N.D. Podufalov). The spread
Olga Kravtsova
doaj   +1 more source

Ricci Collineations for Non-Degenerate, Diagonal and Spherically Symmetric Ricci Tensors [PDF]

open access: yes, 1999
The expression of the vector field generator of a Ricci Collineation for diagonal, spherically symmetric and non-degenerate Ricci tensors is obtained.
A. H. Bokhari   +11 more
core   +2 more sources

A Full List of Projectively Distinct K-Arcs in Finite Projetive Space Pg(2,8) [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2012
A k-arc in a plane PG(2,q)  is a set of k point such that every line in the plane intersect it in at most two points and there is a line intersect it in exactly two points. A k-arc is complete if there is no k+1-arc containing it.
Ali A. Abdulla, Abdulkhalik Yasin
doaj   +1 more source

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