%0 Journal Article
%T Heaps and unpointed stable homotopy theory
%A Luk¨¢£¿ Vok£¿¨ªnek
%J Mathematics
%D 2013
%I arXiv
%X In this paper, we show how certain ``stability phenomena'' in unpointed model categories provide the sets of homotopy classes with the structure of abelian heaps, i.e. abelian groups without a choice of a zero. In contrast with the classical situation of stable (pointed) model categories, these sets can be empty.
%U http://arxiv.org/abs/1312.1709v1