aInstitute of Mathematics, Warsaw University, Warsaw, Poland;bInstitute of Applications of Mathematics, Warsaw University of Life Sciences – SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
Abstract:
We construct examples of localizations in the category of groups which take the Mathieu group M11 to groups of arbitrarily large cardinality which are “abelian up to finitely many generators.” The paper is part of a broader study on the group theoretic properties which are or are not preserved by localizations.