A characterization of infra-Lindelöf spaces

Ohud F. Alghamdi; Ahmad Al-Omari; Ohud F. Alghamdi; Ahmad Al-Omari

doi:10.3934/math.2026031

AIMS Mathematics

2026, Volume 11, Issue 1: 717-733. doi: 10.3934/math.2026031

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Research article

A characterization of infra-Lindelöf spaces

Ohud F. Alghamdi ^{1
,
,},
Ahmad Al-Omari ^{2
,}

1.
Department of Mathematics, Faculty of Science, Al-Baha University, Al-Baha, Saudi Arabia
2.
Department of Mathematics, Faculty of Science, Al al-Bayt University, Mafraq, Jordan; omarimutah1@yahoo.com

Received: 01 November 2025 Revised: 22 December 2025 Accepted: 04 January 2026 Published: 09 January 2026
MSC : 54A05, 54A10

In this paper, we provided a new topological structure called co-infra topological space. We provided new results regarding co-infra open and closed sets. Moreover, we investigated a new characterization of Infra-Lindelöf spaces.
- infra-topology,
- infra-open,
- Lindelöf,
- infra-Lindelöf,
- co-infra open
Citation: Ohud F. Alghamdi, Ahmad Al-Omari. A characterization of infra-Lindelöf spaces[J]. AIMS Mathematics, 2026, 11(1): 717-733. doi: 10.3934/math.2026031

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Abstract

In this paper, we provided a new topological structure called co-infra topological space. We provided new results regarding co-infra open and closed sets. Moreover, we investigated a new characterization of Infra-Lindelöf spaces.

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