On the Steinberg property of the Contou-Carrere symbol

Fernando Pablos Romo

The aim of this work is to show that the Contou-Carrère symbol satisfies the property of Steinberg symbols: $<f,1-f{>}_{A((t){)}^{\times }}=1$ for all elements $f,1-f\in A((t){)}^{\times }$…