×
Copy the page URI to the clipboard
Mačaj, Martin; Širáň, Jozef and Ipolyiová, Mária
(2007).
DOI: https://doi.org/10.1016/j.endm.2007.01.070
Abstract
We use representations of triangle groups in linear groups over algebras arising from factor rings of multivariate polynomial rings to substantially improve the existing upper bounds on the size of regular maps of a given type with a given planar width.