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Learn about the two futures market indices published by Value Line, comprising 1,681 publicly listed companies on the NYSE, NYSE American, NASDAQ, and TSX. The indices use geometric or arithmetic averages to measure the North American equity market performance.
In coordination chemistry and crystallography, the geometry index or structural parameter (τ) is a number ranging from 0 to 1 that indicates what the geometry of the coordination center is. The first such parameter for 5-coordinate compounds was developed in 1984. [ 1 ]
The degree of circularity of an ellipse is quantified by eccentricity, with values between 0 to 1, where 0 is a perfect circle and 1 is a vertical line. [1] To accommodate human shape data in a greater range, Thomas and colleagues mapped eccentricity in a range of 1 to 20 by using the equation: [1] Body Roundness Index = 364.2 - 365.5 x ...
Learn about the concept of eigenvalues and eigenvectors in linear algebra, and how they characterize linear transformations and matrices. Find definitions, examples, applications, history, and related topics.
A geometric series is a series in which the ratio of successive adjacent terms is constant. Learn how to write, evaluate and prove the sum of a geometric series using the formula S = a / (1 - r), where a is the coefficient and r is the common ratio.
GD&T is a system for defining and communicating engineering tolerances via a symbolic language on drawings and 3D models. Learn the origin, concepts, rules, and standards of GD&T, and how it can improve part quality and reduce cost.
For a (0,2) tensor, [1] twice contracting with the inverse metric tensor and contracting in different indices raises each index: =. Similarly, twice contracting with the metric tensor and contracting in different indices lowers each index:
A line bundle is a vector bundle of rank 1 that varies from point to point of a space. Learn how line bundles are defined, classified and used in topology, algebraic geometry and differential geometry.