Existence of a nice embedded tree
Existence of a nice embedded tree
Let be a noncompact, metrizable generalized continuum. An infinite rooted tree is an infinite tree with a distinguished root, and a proper embedding is a topological embedding whose inverse images of compact sets are compact. The induced map on end spaces is denoted . Existence of a nice embedded tree conjecture. There exists an infinite rooted tree and a proper topological embedding
such that
is a homeomorphism. Moreover, may be chosen either to contain no leaves or so that the root is the unique leaf. This would provide a tree model for the end space of every noncompact metrizable generalized continuum, with additional control over the tree's leaves; the source presents it as a future direction and gives no known resolution.
Sources & referencesView supporting material
Primary source
William G. Bass and Jack S. Calcut, “Ends and end cohomology”, arXiv:2412.01816 (2025).
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