English

Bertini type results and their applications

Algebraic Geometry 2024-04-22 v2

Abstract

We prove Bertini type theorems and give some applications of them. The applications are in the context of Lefschetz theorem for Nori fundamental group for normal varieties as well as for geometric formal orbifolds. In another application, it is shown that certain class of a smooth quasi-projective variety contains a smooth curve such that irreducible lisse \ell-adic sheaves on the variety with "ramification bounded by a branch data" remains irreducible when restricted to the curve.

Keywords

Cite

@article{arxiv.2302.06907,
  title  = {Bertini type results and their applications},
  author = {Indranil Biswas and Manish Kumar and A. J. Parameswaran},
  journal= {arXiv preprint arXiv:2302.06907},
  year   = {2024}
}

Comments

Final Version. The proof of Theorem 3.5 is fixed

R2 v1 2026-06-28T08:39:37.902Z