A cusp surface singularity is Frobenius liftable

Tatsuro Kawakami; Teppei Takamatsu

A cusp surface singularity is Frobenius liftable

Algebraic Geometry 2026-08-01 v1 Commutative Algebra

Authors: Tatsuro Kawakami , Teppei Takamatsu

Abstract

We show that a cusp surface singularity is Frobenius liftable. As a consequence, we determine all the Frobenius liftable surface singularities.

Cite

@article{arxiv.2608.00644,
  title  = {A cusp surface singularity is Frobenius liftable},
  author = {Tatsuro Kawakami and Teppei Takamatsu},
  journal= {arXiv preprint arXiv:2608.00644},
  year   = {2026}
}

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7 pages