On Finitely Null-additive and Finitely Weakly Null-additive Relative to the σ–ring

     This article introduces the concept of finitely null-additive set function relative to the σ– ring and many properties of this concept have been discussed. Furthermore, to introduce and study the notion of finitely weakly null-additive set function relative to the σ– ring as a generalization o...

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Bibliographic Details
Main Authors: Samah H. Asaad, Ibrahim S. Ahmed, Hassan H. Ebrahim
Format: Article
Language:English
Published: University of Baghdad, College of Science for Women 2022-10-01
Series:مجلة بغداد للعلوم
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Online Access:https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/5771
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Summary:     This article introduces the concept of finitely null-additive set function relative to the σ– ring and many properties of this concept have been discussed. Furthermore, to introduce and study the notion of finitely weakly null-additive set function relative to the σ– ring as a generalization of some concepts such as measure, countably additive, finitely additive, countably null-additive, countably weakly null-additive and finitely null-additive. As the first result, it has been proved that every finitely null-additive is a finitely weakly null-additive. Finally, the paper introduces a study of the concept of outer measure as a stronger form of finitely weakly null-additive.
ISSN:2078-8665
2411-7986