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Probabilistic constructions in generalized quadrangles
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Jeroen Schillewaert
exaly +2 more sources
Foundations of elation generalized quadrangles [PDF]
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
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On the history of generalized quadrangles
\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]
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
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A question of Frohardt on $2$ -groups, skew translation quadrangles of even order and cyclic STGQs
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]
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)
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]
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
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An inequality for generalized quadrangles [PDF]
Let S \mathcal {S} be a generalized quadrangle of order (
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Affine representations of generalized quadrangles [PDF]
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

