2017/07/25 by Flores, Ramon, Scherer, Jerome
#20E22 #20F50 #20F99 #55P60 #55R35 #Algebraic Topology (math.AT) #FOS: Mathematics #Group Theory (math.GR)
paper · doi:10.48550/arxiv.1707.08021
We prove that, in the category of groups, the composition of a cellularization and a localization functor need not be idempotent. This provides a negative answer to a question of Emmanuel Dror Farjoun.