2021Topology ProceedingsOpen access

All Parovichenko spaces may be soft-Parovichenko

Alan Dow, Klaas Pieter Hart

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Abstract

To the memory of Phil Zenor, one of the founders of this journal Abstract. It is shown that, assuming the Continuum Hypothesis, every compact Hausdorff space of weight at most $\mathfrak{c}$ is a remainder in a soft compactification of $\mathbb{N}$. We also exhibit an example of a compact space of weight $\aleph_1-$ hence a remainder in some compactification of $\mathbb{N}$ - for which it is consistent that is not the remainder in a soft compactification of $\mathbb{N}$.

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To the memory of Phil Zenor, one of the founders of this journal Abstract. It is shown that, assuming the Continuum Hypothesis, every compact Hausdorff space of weight at most $\mathfrak{c}$ is a remainder in a soft compactification of $\mathbb{N}$. We also exhibit an example of a compact space of weight $\aleph_1-$ hence a remainder in some compactification of $\mathbb{N}$ - for which it is consistent that is not the remainder in a soft compactification of $\mathbb{N}$.

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Available abstract

To the memory of Phil Zenor, one of the founders of this journal Abstract. It is shown that, assuming the Continuum Hypothesis, every compact Hausdorff space of weight at most $\mathfrak{c}$ is a remainder in a soft compactification of $\mathbb{N}$. We also exhibit an example of a compact space of weight $\aleph_1-$ hence a remainder in some compactification of $\mathbb{N}$ - for which it is consistent that is not the remainder in a soft compactification of $\mathbb{N}$.

Key concepts: Remainder, Compactification (mathematics), Hausdorff space, Mathematics, Locally compact space, Pure mathematics, Arithmetic

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