On the minimal number of singular fibers in lefschetz fibrations over the torus

András I. Stipsicz, Ki Heon Yun

Research output: Contribution to journalArticle

1 Citation (Scopus)


We show that the minimal number of singular fibers N(g,1) in a genus-g Lefschetz fibration over the torus is at least 3. As an application, we show that N(g,’1) ∈ {3,4} for g ≥ 5, N(g,1) ∈ {3,4,5} for g = 3,4 and N(2,1) = 7.

Original languageEnglish
Pages (from-to)3607-3616
Number of pages10
JournalProceedings of the American Mathematical Society
Issue number8
Publication statusPublished - Jan 1 2017



  • Lefschetz fibration
  • Mapping class group

ASJC Scopus subject areas

  • Mathematics(all)
  • Applied Mathematics

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