English

Examples of plane rational curves with two Galois points in positive characteristic, II

Algebraic Geometry 2021-03-04 v1 Group Theory

Abstract

It is proved that there exist plane rational curves of degree twelve (resp. twenty-four) with two different outer Galois points such that the Galois group at one of two Galois points is an alternating group A4A_4 (resp. a symmetric group S4S_4) of degree four, under the assumption that the characteristic of the ground field is eleven (resp. is twenty-three). For an alternating group A5A_5 of degree five, a similar existence theorem is confirmed, over a field of characteristic 5959, by GAP system.

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Cite

@article{arxiv.2103.02218,
  title  = {Examples of plane rational curves with two Galois points in positive characteristic, II},
  author = {Satoru Fukasawa and Katsushi Waki},
  journal= {arXiv preprint arXiv:2103.02218},
  year   = {2021}
}

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12 pages