Singer 8-arcs of Mathon type in PG(2,2^7)

Details Singer 8-arcs of Mathon type in PG(2,2^7) Singer 8-arcs of Mathon type in PG(2,2^7)

2010-10-06

arxiv.org/abs/1010.1279v1

Mathematics

Combinatorics

13 pages

Scientific paper

In a former paper the authors counted the number of non-isomorphic Mathon maximal arcs of degree 8 in PG(2,2^h), h not 7 and prime. In this paper we will show that in PG(2,2^7) a special class of Mathon maximal arcs of degree 8 arises which admits a Singer group (i.e. a sharply transitive group) on the 7 conics of these arcs. We will give a detailed description of these arcs, and then count the total number of non-isomorphic Mathon maximal arcs of degree 8. Finally we show that the special arcs found in PG(2,2^7) extend to two infinite families of Mathon arcs of degree 8 in PG(2,2^k), k odd and divisible by 7, while maintaining the nice property of admitting a Singer group.

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