Cohomological Separability of Baumslag--Solitar groups and Their Generalisations

William D. Cohen, Julian Wykowski

A group $\hat{I}“$ has separable cohomology if the profinite completion map ${\hat{I}}^1:\hat{I}“\to \hat{\hat{I}}“$ induces an isomorphism on cohomology with finite coefficient modules. In this arti…