A construction of noncontractible simply connected cell-like two dimensional Peano continua

Eda, Katsuya; Karimov, Umed H.; Repovš, Dušan

A construction of noncontractible simply connected cell-like two dimensional Peano continua

Authors

Eda, Katsuya

Karimov, Umed H.

Repovš, Dušan

Description

Using the topologist sine curve we present a new functorial construction of cone-like spaces, starting in the category of all path-connected topological spaces with a base point and continuous maps, and ending in the subcategory of all simply connected spaces. If one starts by a noncontractible n-dimensional Peano continuum for any n>0, then our construction yields a simply connected noncontractible (n + 1)-dimensional cell-like Peano continuum. In particular, starting with the circle $\mathbb{S}^1$, one gets a noncontractible simply connected cell-like 2-dimensional Peano continuum.