On the flocks of Q+(3,q)
β Scribed by Laura Bader; Guglielmo Lunardon
- Publisher
- Springer
- Year
- 1989
- Tongue
- English
- Weight
- 297 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0046-5755
No coin nor oath required. For personal study only.
β¦ Synopsis
A complete characterization of the flocks of Q + (3, q) is given. As an application, it follows that if q is odd, q # 11, 23, 59, there exist no maximal exterior sets of Q + (2n -1, q) for n>2.
π SIMILAR VOLUMES
Three new examples of non-linear flocks of the non-singular ruled quadric Q +(3, q) of PG(3, q) are given.
It is unknown whether or not there exists an [87, 5, 57 ; 31-code. Such a code would meet the Griesmer bound. The purpose of this paper is to give a constructive proof of the existence of [q4 + q2 \_ q, 5, q'\* -q3 + q2 \_ 2q; q]-codes for any prime power q \_> 3. As a special case, it is shown that
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 i