1. A cancellative amenable ascending union of nonamenable semigroups Creator: John Format: bez média and svazek Type: model:article and TEXT Subject: amenability, semigroups, and ascending union Language: English Description: We construct an example of a cancellative amenable semigroup which is the ascending union of semigroups, none of which are amenable. Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public