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    On Finitely Null-additive and Finitely Weakly Null-additive Relative to the ฯƒโ€“ring

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    ูŠู‡ุฏู ู‡ุฐุง ุงู„ุจุญุซ ุงู„ู‰ ุชู‚ุฏูŠู€ู€ู… ู…ูู‡ูˆู… ุงู„ู…ุถุงูุงุช ุงู„ูุงุฑุบุฉ ุงู„ู…ู†ุชู‡ูŠุฉ ู†ุณุจุฉู‹ ุงู„ู‰ ุงู„ุญู„ู‚ุฉ ู…ู† ุงู„ู†ู…ุท โ€“ฯƒย  ูˆู…ู†ุงู‚ุดู€ู€ุฉ ุงู„ุนุฏูŠุฏ ู…ู† ุงู„ุฎุตุงุฆุต ู„ู‡ุฐุง ุงู„ู…ูู‡ูˆู…. ุงุถุงูุฉู‹ ุงู„ู‰ ุฐู„ูƒ ู‚ุฏู…ู†ุง ูˆุฏุฑุณู€ู€ู†ุง ู…ูู‡ูˆู… ุงู„ู…ุถุงูุงุช ุงู„ูุงุฑุบุฉ ุงู„ุถุนูŠูุฉ ุงู„ู…ู†ุชู‡ูŠุฉ ู†ุณุจุฉู‹ ุงู„ู‰ ุงู„ุญู„ู‚ุฉ ู…ู† ุงู„ู†ู…ุทโ€“ฯƒ ูˆู‡ูŠ ุฃุนู€ู… ู…ู† ุจุนุถ ุงู„ู…ูุงู‡ูŠู…ย  ูƒุงู„ู‚ูŠุงุณ ูˆุงู„ู…ุถุงูุงุช ุงู„ู…ุนุฏูˆุฏุฉ ูˆุงู„ู…ุถุงูุงุช ุงู„ู…ู†ุชู‡ูŠุฉย  ูˆุงู„ู…ุถุงูุงุช ุงู„ูุงุฑุบุฉ ุงู„ู…ุนุฏูˆุฏุฉ ูˆุงู„ู…ุถุงูุงุช ุงู„ูุงุฑุบุฉ ุงู„ุถุนูŠูุฉ ุงู„ู…ุนุฏูˆุฏุฉ ูˆุงู„ู…ุถุงูุงุช ุงู„ูุงุฑุบุฉ ุงู„ู…ู†ุชู‡ูŠุฉ ูˆ ุนู„ู‰ ู‡ุฐุง ุงู„ุงุณู€ู€ุงุณ ุจุฑู‡ู€ู€ู€ู†ุง ุงู† ูƒู„ ุงู„ู…ุถุงู ุงู„ูุงุฑุบ ุงู„ู…ู†ุชู‡ูŠ ูŠู€ู€ุคุฏูŠ ุงู„ู‰ ุงู„ู…ุถุงู ุงู„ูุงุฑุบ ุงู„ุถุนูŠู ุงู„ู…ู†ุชู‡ู€ู€ูŠ . ูˆุงุฎู€ู€ู€ูŠุฑุงู‹ ุฏุฑุณู€ู€ู€ู†ุง ู…ูู‡ูˆู… ุงู„ู‚ูŠุงุณ ุงู„ุฎุงุฑุฌูŠ ุฅุฐ ูŠูƒูˆู† ุงู‚ู€ู€ูˆู‰ ู…ู† ู…ูู‡ู€ู€ู€ูˆู… ุงู„ู…ุถุงูุงุช ุงู„ูุงุฑุบุฉ ุงู„ุถุนูŠูู€ู€ุฉ ุงู„ู…ู†ุชู‡ูŠุฉ.ย ย ย  ย This article introduces the concept of finitely null-additive set function relative to the ฯƒโ€“ 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 ฯƒโ€“ 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
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