Mathematics – Geometric Topology
Scientific paper
2007-07-27
Fund. Math. 195: 3 (2007), 193-203.
Mathematics
Geometric Topology
Scientific paper
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.
Eda Katsuya
Karimov Umed H.
Repovš Dušan
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