Compactness measure is a numerical quantity representing the degree to which a shape is compact. The circle and the sphere are the most compact planar...
4 KB (504 words) - 12:03, 18 June 2024
analysis, two measures of non-compactness are commonly used; these associate numbers to sets in such a way that compact sets all get the measure 0, and other...
3 KB (483 words) - 11:40, 20 August 2022
roundness A circularity ratio as a compactness measure of a shape An assumption of ANOVAs, with repeated-measures, often called "sphericity" Circular...
476 bytes (85 words) - 12:17, 20 December 2020
The Polsby–Popper test is a mathematical compactness measure of a shape developed to quantify the degree of gerrymandering of political districts. The...
3 KB (376 words) - 09:00, 19 May 2024
Compactness can refer to: Compact space, in topology Compact operator, in functional analysis Compactness theorem, in first-order logic Compactness measure...
289 bytes (67 words) - 21:13, 10 March 2022
topology, compactness is a property that seeks to generalize the notion of a closed and bounded subset of Euclidean space. The idea is that a compact space...
45 KB (5,697 words) - 16:35, 12 November 2024
analysis: Shape factor (image analysis and microscopy) including: The compactness measure of a shape In statistics: The shape parameter, sometimes referred...
2 KB (156 words) - 21:58, 19 August 2021
can turn without failing. Sphericity is a specific example of a compactness measure of a shape. Sphericity applies in three dimensions; its analogue...
7 KB (645 words) - 15:24, 8 October 2024
In mathematical analysis, the Haar measure assigns an "invariant volume" to subsets of locally compact topological groups, consequently defining an integral...
32 KB (5,357 words) - 21:19, 16 October 2024
starting point and should be built upon with additional measures, like the compactness measure of a shape to prevent against gerrymandering. Citing in...
12 KB (1,427 words) - 05:33, 7 November 2024
property of local compactness, and as such motivated the search for the more general theory, presented here. Any discrete group is locally compact. The theory...
8 KB (993 words) - 16:51, 25 May 2024
patents, and prototypes instigated and in some measure influenced the compact disc's design. The compact disc is an evolution of LaserDisc technology,...
44 KB (8,646 words) - 23:32, 9 November 2024
finite on all compact sets, outer regular on all Borel sets, and inner regular on open sets. These conditions guarantee that the measure is "compatible"...
19 KB (2,697 words) - 00:45, 4 November 2024
sets and from below by compact measurable sets. Let (X, T) be a topological space and let Σ be a σ-algebra on X. Let μ be a measure on (X, Σ). A measurable...
7 KB (1,010 words) - 19:02, 10 September 2024
circle and goes down as far as 0 for highly non-circular shapes. Compactness measure of a shape Eccentricity (mathematics), how much a conic section (e...
9 KB (1,201 words) - 05:15, 3 October 2024
American political scientist Polsby–Popper test, a mathematical compactness measure This page lists people with the surname Polsby. If an internal link...
283 bytes (74 words) - 01:51, 27 December 2020
Prokhorov's theorem (category Compactness theorems)
In measure theory Prokhorov's theorem relates tightness of measures to relative compactness (and hence weak convergence) in the space of probability measures...
5 KB (660 words) - 04:24, 2 February 2023
all other known rocky bodies) so that their heat loss is minimal. Compactness measure of a shape Dust explosion Square–cube law Specific surface area Schmidt-Nielsen...
20 KB (2,134 words) - 08:24, 23 March 2024
homeomorphism) locally compact Hausdorff space X. This is shown using the Gelfand representation. The notion of local compactness is important in the study...
19 KB (2,522 words) - 15:27, 24 December 2023
include: Borel measure, Jordan measure, ergodic measure, Gaussian measure, Baire measure, Radon measure, Young measure, and Loeb measure. In physics an...
35 KB (5,554 words) - 21:47, 26 October 2024
Absolute continuity (redirect from Absolutely continuous measure)
Radon–Nikodym derivative, or density, of a measure. We have the following chains of inclusions for functions over a compact subset of the real line: absolutely...
19 KB (2,686 words) - 00:14, 27 September 2024
counting measure is σ -finite. Locally compact groups which are σ-compact are σ-finite under the Haar measure. For example, all connected, locally compact groups...
9 KB (1,366 words) - 15:09, 11 November 2024
In measure theory, a branch of mathematics, the Lebesgue measure, named after French mathematician Henri Lebesgue, is the standard way of assigning a...
18 KB (2,641 words) - 04:15, 22 November 2024
Pontryagin duality (redirect from Locally compact abelian topological group)
with the Haar measure introduced by John von Neumann, André Weil and others depends on the theory of the dual group of a locally compact abelian group...
39 KB (5,807 words) - 20:34, 7 November 2024
outcome, while the intermediary measure of state-level majorities is rendered obsolete. Some opponents of the compact contend that it would lead to a...
154 KB (10,761 words) - 18:01, 20 November 2024
require additional restrictions on the measure, as described below. Let X {\displaystyle X} be a locally compact Hausdorff space, and let B ( X ) {\displaystyle...
10 KB (1,265 words) - 19:58, 28 August 2024
descriptions as a fallback Haar measure – Left-invariant (or right-invariant) measure on locally compact topological group Lebesgue measure – Concept of area in...
7 KB (970 words) - 22:35, 31 March 2024
Packing density (section In compact spaces)
greatest possible density. If K1,...,Kn are measurable subsets of a compact measure space X and their interiors pairwise do not intersect, then the collection...
4 KB (555 words) - 21:45, 21 June 2022
\varepsilon >0} , there is a compact subset K ε {\displaystyle K_{\varepsilon }} of X {\displaystyle X} such that, for all measures μ ∈ M {\displaystyle \mu...
7 KB (980 words) - 18:20, 27 June 2024
Support (mathematics) (redirect from Compact support)
α , {\textstyle \bigcup U_{\alpha },} a simple argument based on the compactness of the support of ϕ {\displaystyle \phi } and a partition of unity shows...
17 KB (2,662 words) - 12:59, 18 August 2024