Some results on 1/n-homogeneity
Given a positive integer $n,$ a non-empty topological space is said to be $\frac{1}{n}$-homogeneous provided there are exactly $n$ orbits for the action of the group of homeomorphisms of the space onto itself. Now, for a non-empty topological space $X,$ the cone of $X$, $ \mathop{\rm Cone}(X),$ is the quotient space that is obtained by identifying all the points $(x,1)$ in $X\times [0,1]$ to a single point. The suspension of $X$, $\mathop{\rm Sus}(X),$ is the quotient space that is obtained by identifying all the points $(x,1)$ in $X\times [-1,1]$ to a single point, and all the points $(x,-1)$ to another point. The quotient space $Z_{X}$, is the space that is obtained by identifying all the points $(x,1)$ and all the points $(x,-1)$ in $X\times [-1,1]$ to one point. In this paper we determine general properties of the quotient spaces $Z_{X}$ and we investigate $\frac{1}{n}$-homogeneity on the quotient spaces $Z_{X}$, $\mathop{\rm Sus}(Z_X)$ and $\mathop{\rm Cone}(Z_X)$, among certain classes of compact metric spaces. In particular, we obtain the degree of homogeneity of the harmonic sequence, the $n$-rose finite graph and the space $X$ which is the union of a sequence $\{C_n\}^{\infty}_{n=1}$ of circles in the plane joined by a point and converging to a limit circle $C_0$.
Authors
- Alicia Santiago-Santos (ORCID: https://orcid.org/0000-0002-1888-7135)
- Noé Trinidad Tapia-Bonilla
Institutions
- Technological University of the Mixteca (MX)
- Benito Juárez Autonomous University of Oaxaca (MX)
Publication Details
- Journal
- Matematychni Studii
- Published
- 2025-06-24
- DOI
- https://doi.org/10.30970/ms.63.2.181-198
- Primary Topic
- Advanced Topology and Set Theory
- Type
- article
- Field-Weighted Citation Impact
- 0.00