Hamada, N., T. Helleseth and 8. Ytrehus, Characterization of {2(q + 1) + 2, 2; t, q]-minihypers in PG(t, q) (t>3, q6{3,4}), Discrete Mathematics 115 (1993) 175-185. A set F offpoints in a finite projective geometry PG(t, q) is an (L m; t, q}-minihyper if m (>O) is the largest integer such that all
On the uniqueness of (q + 1)4-arcs of PG(4, q), q = 2h, h ⩾ 3
✍ Scribed by L.R.A Casse; D.G Glynn
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 579 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
✦ Synopsis
Two results are proved: (1) In PG(3, q), q=2 h, h>~3, every q3-arc can be uniquely completed to a (q + 1)3-arc. (2) In PG(4, q), q = 2", h ~> 3, every (q + 1)4-arc is a normal rational curve.
1. In~oduction
We assume throughout this paper that the base field GF(q) is of order q = 2 h, where h is some positive integer greater than 2.
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## Abstract We have classified by computer the projectively distinct complete (**__k__**, **3**)‐arcs in **PG**(**2**, **__q__**), **__q__**≤**13**. The algorithm used is an application of isomorph‐free backtracking using canonical augmentation, an adaptation of our earlier algorithms for the gener
The automorphism group of the set of 12 points associated with an apolar system of conics is determined. A complete (q -&arc for q = 13 can be obtained as a special case. The orbits of its automorphism group are also described. 0 I Y Y ~ John Wile?. & Sons, h e .
In 1955, Hall and Paige conjectured that any "nite group with a noncyclic Sylow 2-subgroup admits complete mappings. For the groups G¸(2, q), S¸(2, q), PS¸(2, q), and PG¸(2, q) this conjecture has been proved except for S¸(2, q), q odd. We prove that S¸(2, q), q,1 modulo 4 admits complete mappings.