Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4658916 | Topology and its Applications | 2013 | 8 Pages |
Abstract
We define the LS-category catg by means of covers of a space by general subsets, and show that this definition coincides with the classical Lusternik-Schnirelmann category for compact metric ANR spaces. We apply this result to give short dimension theoretic proofs of the Grossman-Whitehead theorem and Dranishnikovʼs theorem. We compute catg for some fractal Peano continua such as Menger spaces and Pontryagin surfaces.
Related Topics
Physical Sciences and Engineering
Mathematics
Geometry and Topology
Authors
Tulsi Srinivasan,