Results 21 to 30 of about 736,607 (239)

Probabilistic constructions in generalized quadrangles

open access: yesDiscrete Mathematics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jeroen Schillewaert
exaly   +2 more sources

Foundations of elation generalized quadrangles [PDF]

open access: yesEuropean Journal of Combinatorics, 2006
The authors give a negative answer to the long-standing question whether or not the set of all elations about some point \(x\) forms a group for any thick generalized quadrangle \(S^{(x)}\) having \(x\) as an elation point or a center of transitivity. Furthermore, an answer is given for each of the known generalized quadrangles.
Koen Thas, Stanley E. Payne
openaire   +2 more sources

On the history of generalized quadrangles

open access: yesBulletin of the Belgian Mathematical Society - Simon Stevin, 1994
\textit{S. E. Payne} und \textit{J. A. Thas} [``Finite generalized quadrangles'' (1984; Zbl 0551.05027), Chapter 6] zeigten, daß es genau ein verallgemeinertes Viereck \(Q\) mit \(5\) verschiedenen Punkten auf einer Geraden und 3 verschiedenen Geraden durch einen Punkt gibt.
J W P Hirschfeld
exaly   +4 more sources

Nonisomorphic generalized quadrangles [PDF]

open access: yesJournal of Algebra, 1971
AbstractFor each integer e > 2 a class of somewhat more than φ(e) pairwise non-isomorphic quadrangles is exhibited and shown to yield nonisomorphic (v, k, λ)-designs. The collineation groups of these quadrangles and designs are determined. Also a class of quadrangles with s = q − 1, t = q + l, q any prime power, is constructed.
Payne, Stanley E
openaire   +2 more sources

A question of Frohardt on $2$ -groups, skew translation quadrangles of even order and cyclic STGQs

open access: yesForum of Mathematics, Sigma, 2023
We solve a fundamental question posed in Frohardt’s 1988 paper [6] on finite $2$ -groups with Kantor familes, by showing that finite groups K with a Kantor family $(\mathcal {F},\mathcal {F}^*)$ having distinct members $A, B \in \mathcal
Koen Thas
doaj   +1 more source

Additive two-dimensional splitting schemes for solving 3D suspension transport problems on optimal boundary-adaptive grids with uniform spacing’s in the vertical direction [PDF]

open access: yesE3S Web of Conferences, 2020
The article considers3D matter transport model in dissolved and suspended forms (impurities) in coastal marine systems. The initial boundary value problem numerical solution is carried out on the basis of local2D splitting schemes.
Sukhinov A, Sidoryakina V
doaj   +1 more source

Note on Discovering Doily in PG(2,5)

open access: yesMathematics, 2023
W. L. Edge proved that the internal points of a conic in PG(2,5), together with the collinear triples on the non-secant lines, form the Desargues configuration. M.
Stefano Innamorati
doaj   +1 more source

On the nonexistence of pseudo-generalized quadrangles [PDF]

open access: yesEuropean Journal of Combinatorics, 2020
In this paper we consider the question of when a strongly regular graph with parameters $((s+1)(st+1),s(t+1),s-1,t+1)$ can exist. These parameters arise when the graph is derived from a generalized quadrangle, but there are other examples which do not arise in this manner, and we term these {\it pseudo-generalized quadrangles}.
Ivan Guo   +3 more
openaire   +4 more sources

An inequality for generalized quadrangles [PDF]

open access: yesProceedings of the American Mathematical Society, 1978
Let S \mathcal {S} be a generalized quadrangle of order (
openaire   +2 more sources

Affine representations of generalized quadrangles [PDF]

open access: yes, 1970
It is shown that a general construction due to Tits of finite generalized quadrangles (4-gons) yields the “classical” examples and only these except when the characteristic of the underlying field is 2.
Payne, Stanley E
core   +1 more source

Home - About - Disclaimer - Privacy