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Plenary and Semi-Plenary Talks

Semi-Plenary Talk #2.1

Subevent of Semi-Plenary Talks #2

HUMB 170

Times: 2025 Aug 12 from 01:15PM to 02:15PM (Central Time (US & Canada))

Webinar link: Icon: video Webinar

Homogeneity degree in local dendrites

Patricia Pellicer-Covarrubias ⟨paty@ciencias.unam.mx⟩

Abstract:

Let $X$ be a separable space and let $D(X)$ be the set of countable dense subsets of $X$. Consider an equivalence relation $\sim$, defined on $D(X)$, as follows: we say that $M \sim N$ if and only if there exists a homeomorphism $h: X \to X$ such that $h[M] = N$. Define the countable dense homogeneity degree of $X$ as the cardinality of the set of equivalence classes under the relation $\sim$. In this talk we discuss the countable dense homogeneity degree for local dendrites.

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