TY - Type of reference TI - [FORTHCOMING] Algebraic properties of subspace topologies AU - Noômen Jarboui AU - Bana Al Subaiei AB - It is shown that the collection of all topologies on a given set $$$X$$$ coincide with the set of subsemirings of the power set $$$\mathcal{P}(X)$$$ (equipped with union and intersection) if and only if $$$X$$$ is finite. Furthermore, given a topological space $$$(X, \mathcal{T})$$$ and a subset $$$A$$$ of $$$X$$$, we characterize when the subspace topology $$$\mathcal{T}_A$$$ is a maximal (resp., a prime) ideal of the semiring $$$\mathcal{T}$$$. As applications, we provide an algebraic characterization of the one-point compactification of a noncompact, Tychonoff space. Moreover, we describe explicitly the semiring homomorphisms from $$$\mathcal{P}(X)$$$ into $$$\mathcal{P}(Y)$$$ in case $$$X$$$ is a finite set and $$$Y$$$ is an arbitrary nonempty set. DO - TBA JF - Advances in Pure and Applied Mathematics KW - One-point compactification, Completely regular topological space, Semiring, Maximal ideal, One-point compactification, Completely regular topological space, Semiring, Maximal ideal, L1 - LA - en PB - ISTE OpenScience DA - 2024/07/8 SN - 1869-6090 TT - [FORTHCOMING] Propriétés algébriques des sous-espaces de topologies UR - https://openscience.fr/Algebraic-properties-of-subspace-topologies IS - Forthcoming papers
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