2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/223876We relate Fubini's theorem for Euler characteristics to Riemann-Hurwtiz formulae, and reprove a classical result of Iversen. The techniques used include algebraic geometry, complex geometry, and model theory. Possible applications to the study of wild ramification in finite characteristic are discussed.Algebraic Geometry14E22 (primary), 03C60, 14G22, 14C17 (secondary)Euler characteristics, Fubini's theorem, and the Riemann-Hurwitz formulatext