RUS  ENG
Full version
JOURNALS // Moscow Mathematical Journal // Archive

Mosc. Math. J., 2024 Volume 24, Number 2, Pages 287–315 (Mi mmj885)

On cohomology of quasitoric manifolds over a vertex cut of a finite product of simplices

Soumen Sarkara, Subhankar Saub

a Department of Mathematics, Indian Institute of Technology Madras, India
b Department of Mathematics, The Institute of Mathematical Sciences, Chennai, India

Abstract: In this paper, we classify the characteristic matrices associated to quasitoric manifolds over a vertex cut of a finite product of simplices satisfying a ‘sign condition’. We discuss the integral cohomology rings of these quasitoric manifolds with possibly minimal generators and show several relations among the products of these generators. We classify integral cohomology rings (up to isomorphism as graded rings) of the quasitoric manifolds over the vertex cut of a finite product of simplices.

Key words and phrases: torus action, quasitoric manifold, vertex cut, cohomology ring.

MSC: 57S12, 13F55, 14M25, 52B11, 55N10

Language: English

DOI: 10.17323/1609-4514-2024-24-2-287-315



© Steklov Math. Inst. of RAS, 2025