Affiliation:
1. Centro de Investigación en Matemáticas, México
2. Department of Mathematics, Stockholm University, Sweden
Abstract
Abstract
For multiplicities arising from a family of ideals we provide a general approach to transformation rules for a ring extension that is étale in codimension one. Our result can be applied to bound the size of the local étale fundamental group of a singularity in terms of F-signature, recovering a recent result of Carvajal-Rojas, Schwede, and Tucker, and differential signature, providing the 1st characteristic-free effective bound.
Publisher
Oxford University Press (OUP)
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