In the mathematical field of measure theory, an outer measure or exterior measure is a function defined on all subsets of a given set with values in the...
19 KB (2,501 words) - 01:58, 5 June 2025
subset E ⊆ R {\displaystyle E\subseteq \mathbb {R} } , the Lebesgue outer measure λ ∗ ( E ) {\displaystyle \lambda ^{\!*\!}(E)} is defined as an infimum...
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In mathematics, a metric outer measure is an outer measure μ defined on the subsets of a given metric space (X, d) such that μ ( A ∪ B ) = μ ( A ) + μ...
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specifically fractals and their Hausdorff dimensions. It is a type of outer measure, named for Felix Hausdorff, that assigns a number in [0,∞] to each set...
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In mathematics, an outer measure μ on n-dimensional Euclidean space Rn is called a Borel regular measure if the following two conditions hold: Every Borel...
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on all compact sets, outer regular on all Borel sets, and inner regular on open sets. These conditions guarantee that the measure is "compatible" with...
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example, Rogers (1998) uses "measure" where this article uses the term "outer measure". Outer measures are not, in general, measures, since they may fail to...
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Lebesgue–Stieltjes integration (redirect from Lebesgue-Stieltjes measure)
Borel measure μg on [a, b] which agrees with w on every interval I. The measure μg arises from an outer measure (in fact, a metric outer measure) given...
11 KB (1,624 words) - 06:45, 6 February 2024
Length (section Measure theory)
via the Lebesgue measure. In the one-dimensional case, the Lebesgue outer measure of a set is defined in terms of the lengths of open intervals. Concretely...
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Lebesgue measure Lorentz space Lifting theory Measurable cardinal Measurable function Minkowski content Outer measure Product measure Pushforward measure Regular...
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This page is a list of the episodes of The Outer Limits, a 1995 science fiction/dark fantasy television series. The series was broadcast on Showtime from...
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complete measure (or, more precisely, a complete measure space) is a measure space in which every subset of every null set is measurable (having measure zero)...
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the inner measure of B {\displaystyle B} equals the outer measure. The common value of the two measures is then simply called the Jordan measure of B {\displaystyle...
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points have measure 0 {\displaystyle 0} , so the measure of any compact subset of this vertical segment is 0 {\displaystyle 0} . But, using outer regularity...
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Lebesgue measure Lebesgue integration Lebesgue's density theorem Counting measure Complete measure Haar measure Outer measure Borel regular measure Radon...
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probability measure that is neither inner regular nor outer regular. Borel regular measure Radon measure Regularity theorem for Lebesgue measure Ambrosio...
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first the d-dimensional Hausdorff measure, a fractional-dimension analogue of the Lebesgue measure. First, an outer measure is constructed: Let X {\displaystyle...
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Measurable cardinal (category Measures (set theory))
Equivalently, a cardinal number α is an Ulam number if whenever ν is an outer measure on a set Y, and F a set of pairwise disjoint subsets of Y, ν(⋃F) < ∞...
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Ham sandwich theorem (category Theorems in measure theory)
Xn of a common set X, where X has a Carathéodory outer measure and each Xi has finite outer measure. Their first general formulation is as follows: for...
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Set function (category Measures (measure theory))
outer regular. a Borel regular measure if it is a Borel measure that is also regular. a Radon measure if it is a regular and locally finite measure....
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Vitali set (category Measure theory)
criterion – Part of measure theory mathematics Non-measurable set – Set which cannot be assigned a meaningful "volume" Outer measure – Mathematical function...
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Carathéodory's criterion (category Measure theory)
^{*}:{\mathcal {P}}(\mathbb {R} ^{n})\to [0,\infty ]} denote the Lebesgue outer measure on R n , {\displaystyle \mathbb {R} ^{n},} where P ( R n ) {\displaystyle...
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is an outer measure on the family of all subsets. Therefore, it becomes a measure when restricted to the measurable subsets for the outer measure, which...
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Carathéodory's extension theorem (category Theorems in measure theory)
diagonal has measure infinity. Outer measure: the proof of Carathéodory's extension theorem is based upon the outer measure concept. Loeb measures, constructed...
15 KB (2,617 words) - 19:41, 21 November 2024
finite measure, E ∩ A {\displaystyle E\cap A} is measurable. σ {\displaystyle \sigma } -finite measures and measures arising as the restriction of outer measures...
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measures are often used in combination with outer measures to extend a measure to a larger σ-algebra. If μ {\displaystyle \mu } is a finite measure defined...
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Outer space, or simply space, is the expanse that exists beyond Earth's atmosphere and between celestial bodies. It contains ultra-low levels of particle...
148 KB (14,531 words) - 21:42, 25 June 2025
Non-measurable set (category Measure theory)
mathematical setsPages displaying short descriptions of redirect targets Outer measure – Mathematical function Vitali set – Set of real numbers that is not...
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A tape measure or measuring tape is a long, flexible ruler used to measure length or distance. It usually consists of a ribbon of cloth, plastic, fibreglass...
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Luzin N property (category Measure theory)
it follows that if the Lebesgue outer measure of that set is zero, then it is measurable and its Lebesgue measure is zero as well. Any differentiable...
2 KB (236 words) - 08:50, 3 November 2023