2 papers
math.NT2025
Odd vanishing cycles in cyclotomic fields
Claus Hertling, Khadija Larabi
A cusp of a Hecke group has two natural lifts to the ring of integers of a cyclotomic field. These lifts are called here odd vanishing cycles. All lifts of all cusps together…
math.RT2016
Reduced and nonreduced presentations of Weyl group elements
Sven Balnojan, Claus Hertling
This paper is a sequel to work of Dynkin on subroot lattices of root lattices and to work of Carter on presentations of Weyl group elements as products of reflections. The quotient…