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3-regularity in generalized quadrangles of order (s, s2)

โœ Scribed by J. A. Thas


Publisher
Springer
Year
1984
Tongue
English
Weight
194 KB
Volume
17
Category
Article
ISSN
0046-5755

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โœฆ Synopsis


If (x,y,z)

is a 3-regular triad of a generalized quadrangle S=(P,B,I) of order (s, s2), s even, then {x,y,z}lu {x, y,z} ยฑยฑ is contained in a subquadrangle of order s. As an application it is proved that a generalized quadrangle of order (4, 16) with at least one 3-regular triad is isomorphic to the classical generalized quadrangle Q(5,4) of order (4, 16).


๐Ÿ“œ SIMILAR VOLUMES


Generalized Quadrangles of Order (s, s2)
โœ J.A. Thas ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 212 KB

Let S=(P, B, I) be a generalized quadrangle of order (q, q 2 ), q>1, and assume that S satisfies Property (G) at the flag (x, L). If q is odd then S is the dual of a flock generalized quadrangle. This solves (a stronger version of ) a ten-year-old conjecture. We emphasize that this is a powerful the

Generalized Quadrangles of Order (s, s2)
โœ J.A Thas ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 514 KB

ac.be. \* . The set of all points r i \* is denoted by B; we have |B| =q 2n . Further, let A be the set of all intersections of PG(n+1, q n ) with the tangent lines of the conics C i at s 1 . The tangent line U i of C i at s 1 belongs to {ร„ , hence of B and just one point of A. Let ? be the plane c

Translation Generalized Quadrangles of O
โœ J.A. Thas ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 154 KB

Characterizations of classical eggs and the classical generalized quadrangle Qรฐ5; sรž; s even, are given. The egg Oรฐn; 2n; qรž ยผ O of PGรฐ4n ร€ 1; qรž; q even, is classical if and only if either O is good at some element and contains at least one pseudo-conic, or O contains at least two intersecting pseu

Nonexistence of Complete (stโˆ’t/s)-Arcs i
โœ Koen Thas ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 105 KB

Let S be a finite generalized quadrangle (GQ) of order (s, t), s ] 1 ] t. A k-arc K is a set of k mutually non-collinear points. For any k-arc of S we have k [ st+1; if k=st+1, then K is an ovoid of S. A k-arc is complete if it is not contained in a kOE-arc with kOE > k. In S. E. Payne and J. A. Tha

Cubic s-regular graphs of order 2p3
โœ Yan-Quan Feng; Jin Ho Kwak; Ming-Yao Xu ๐Ÿ“‚ Article ๐Ÿ“… 2006 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 155 KB

## Abstract A graph is __sโ€regular__ if its automorphism group acts regularly on the set of its __s__โ€arcs. Malniฤ et al. (Discrete Math 274 (2004), 187โ€“198) classified the connected cubic edgeโ€transitive, but not vertexโ€transitive graphs of order 2__p__^3^ for each prime __p__. In this article, we