Occlusion
发表于 2025-3-27 00:29:56
Measure and Category on the Line,vides a natural starting point for the study of both measure and category. Let us recall that a set is called . if its elements can be put in one-to-one correspondence with the natural numbers 1, 2,… A . set is one that is either finite or denumerable. The set of rational numbers is denumerable, bec
white-matter
发表于 2025-3-27 03:47:38
Liouville Numbers,ain property is either countable, or a nullset, or a set of first category, then it follows that there exist points of the interval that have the property in question, in fact, most points of the interval (in the sense of cardinal number, or measure, or category, respectively) have the property. As
毗邻
发表于 2025-3-27 09:11:24
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波动
发表于 2025-3-27 10:47:22
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calumniate
发表于 2025-3-27 15:55:06
Non-Measurable Sets, line. We know that any set obtained as the result of countably many applications of union, intersection, or complementation, starting from a countable family of closed, open, or nullsets, will be measurable. It can also be shown that any analytic set is measurable. (An . is one that can be represen
Sciatica
发表于 2025-3-27 21:05:00
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不适当
发表于 2025-3-27 22:37:40
Functions of First Class,the .. For any fixed ., the function ω((x–δ, x+δ)) descreases with δ and approaches a limit.called the .. ω(x) is an extended real-valued function on .. Evidently, ω(x.)=0 if and only if . is continuous at x.. When it is not zero, ω(x.) is a measure of the size of the discontinuity of f at x..
TEM
发表于 2025-3-28 02:28:19
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dilute
发表于 2025-3-28 08:39:38
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commonsense
发表于 2025-3-28 12:22:17
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