{"title":"关于星的统计紧致性","authors":"Prasenjit Bal, Debjani Rakshit, Susmita Sarkar","doi":"10.1007/s13370-025-01270-4","DOIUrl":null,"url":null,"abstract":"<div><p>In a space <i>X</i>, if for every countable open cover <span>\\(\\mathcal {U} =\\{U_n:n \\in \\textbf{N}\\}\\)</span> of <i>X</i>, we can find a subcover <span>\\({\\mathcal {V}} = \\{U_{m_k}:k \\in \\textbf{N}\\}\\)</span> such that <span>\\(\\delta (\\{m_k: U_{m_k} \\in {\\mathcal {V}} \\})=0\\)</span> then the space is called a statistically compact space. Extending the recent works of Sarkar, Bal, and Rakshit on statistically compactness, we investigate statistically compactness of a topological space in the star-operator’s background. The concept of star statistically compactness is contrasted to other topological features. This study explains the attributes of star statistically compactness and its subspaces under diverse circumstances, especially under open continuous surjection.</p></div>","PeriodicalId":46107,"journal":{"name":"Afrika Matematika","volume":"36 1","pages":""},"PeriodicalIF":0.9000,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"On star statistically compactness\",\"authors\":\"Prasenjit Bal, Debjani Rakshit, Susmita Sarkar\",\"doi\":\"10.1007/s13370-025-01270-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In a space <i>X</i>, if for every countable open cover <span>\\\\(\\\\mathcal {U} =\\\\{U_n:n \\\\in \\\\textbf{N}\\\\}\\\\)</span> of <i>X</i>, we can find a subcover <span>\\\\({\\\\mathcal {V}} = \\\\{U_{m_k}:k \\\\in \\\\textbf{N}\\\\}\\\\)</span> such that <span>\\\\(\\\\delta (\\\\{m_k: U_{m_k} \\\\in {\\\\mathcal {V}} \\\\})=0\\\\)</span> then the space is called a statistically compact space. Extending the recent works of Sarkar, Bal, and Rakshit on statistically compactness, we investigate statistically compactness of a topological space in the star-operator’s background. The concept of star statistically compactness is contrasted to other topological features. This study explains the attributes of star statistically compactness and its subspaces under diverse circumstances, especially under open continuous surjection.</p></div>\",\"PeriodicalId\":46107,\"journal\":{\"name\":\"Afrika Matematika\",\"volume\":\"36 1\",\"pages\":\"\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2025-01-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Afrika Matematika\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s13370-025-01270-4\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Afrika Matematika","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1007/s13370-025-01270-4","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATHEMATICS","Score":null,"Total":0}
In a space X, if for every countable open cover \(\mathcal {U} =\{U_n:n \in \textbf{N}\}\) of X, we can find a subcover \({\mathcal {V}} = \{U_{m_k}:k \in \textbf{N}\}\) such that \(\delta (\{m_k: U_{m_k} \in {\mathcal {V}} \})=0\) then the space is called a statistically compact space. Extending the recent works of Sarkar, Bal, and Rakshit on statistically compactness, we investigate statistically compactness of a topological space in the star-operator’s background. The concept of star statistically compactness is contrasted to other topological features. This study explains the attributes of star statistically compactness and its subspaces under diverse circumstances, especially under open continuous surjection.