On Mathon’s construction of maximal arcs in Desarguesian planes

نویسندگان

  • Frank Fiedler
  • Ka Hin Leung
  • Qing Xiang
چکیده

We study the problem of determining the largest d of a non-Denniston maximal arc of degree 2 generated by a fp; 1g-map in PGð2; 2Þ via a recent construction of Mathon [9]. On one hand, we show that there are fp; 1g-maps that generate non-Denniston maximal arcs of degree 2ðmþ1Þ=2, where md 5 is odd. Together with Mathon’s result [9] in the m even case, this shows that there are always fp; 1g-maps generating non-Denniston maximal arcs of degree 2bðmþ2Þ=2c in PGð2; 2Þ. On the other hand, we prove that the largest degree of a non-Denniston maximal arc in PGð2; 2Þ constructed using a fp; 1g-map is less than or equal to 2 . We conjecture that this largest degree is actually 2bðmþ2Þ=2c when m > 9.

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تاریخ انتشار 2002