## Abstract The sporadic complete 12‐arc in PG(2, 13) contains eight points from a conic. In PG(2,__q__) with __q__>13 odd, all known complete __k__‐arcs sharing exactly ½(__q__+3) points with a conic 𝒞 have size at most ½(__q__+3)+2, with only two exceptions, both due to Pellegrino, which are comp
On the Non-existence of Thas Maximal Arcs in Odd Order Projective Planes
✍ Scribed by A. Blokhuis; N. Hamilton; H. Wilbrink
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 91 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0195-6698
No coin nor oath required. For personal study only.
✦ Synopsis
In this paper it is shown that given a non-degenerate elliptic quadric in the projective space PG(2n -1, q), q odd, then there does not exist a spread of PG(2n -1, q) such that each element of the spread meets the quadric in a maximal totally singular subspace. An immediate consequence is that the construction of [9] does not give maximal arcs in projective planes for q odd. It is also shown that the all one vector is not contained in the binary code spanned by the tangents to an elliptic quadric in PG(3, q), q odd.
📜 SIMILAR VOLUMES
## Abstract The functions __a(n)__ and __p(n)__ are defined to be the smallest integer λ for which λ‐fold quasimultiples affine and projective planes of order __n__ exist. It was shown by Jungnickel [J. Combin. Designs 3 (1995), 427–432] that __a(n),p(n)__ < __n__^10^ for sufficiently large __n__.