Aris Martinian, Benjamin Steinberg
2026.6.8SEMIGROUP FORUM
Abstract
Fiedorowicz suggested that it was likely that every finite simply connected CW complex is homotopy equivalent to the classifying space of a finite semigroup. We prove that every finite wedge of simply connected Moore spaces of finitely generated abelian groups is homotopy equivalent to the classifying space of a finite semigroup. Consequently, homology groups alone cannot preclude a finite simply connected CW complex from being homotopy equivalent to the classifying space of a finite semigroup.
Citation format
MARTINIAN, Aris; STEINBERG, Benjamin. Realizing wedges of moore spaces as classifying spaces of finite semigroups. SEMIGROUP FORUM, 2026.