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Upper ramification sequences of nonabelian extensions of degree $p^3$ in characteristic $p$

Number Theory 2023-03-06 v1

Abstract

We classify the upper ramification breaks of totally ramified nonabelian extensions of degree p3p^3 over a local field of characteristic p>0p>0. We find that nonintegral upper ramification breaks can occur for each nonabelian Galois group of order p3p^3, except the dihedral group of order 88.

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Cite

@article{arxiv.2303.01984,
  title  = {Upper ramification sequences of nonabelian extensions of degree $p^3$ in characteristic $p$},
  author = {G. Griffith Elder},
  journal= {arXiv preprint arXiv:2303.01984},
  year   = {2023}
}

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20 pages