numerical radius
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Numerical range — In the mathematical field of linear algebra and convex analysis, the numerical range of a square matrix with complex entries is a subset of the complex plane associated to the matrix. If A is an n × n matrix with complex entries, then… … Wikipedia
Numerical aperture — The numerical aperture with respect to a point P depends on the half angle θ of the maximum cone of light that can enter or exit the lens. In optics, the numerical aperture (NA) of an optical system is a dimensionless number that characterizes… … Wikipedia
Numerical stability — In the mathematical subfield of numerical analysis, numerical stability is a desirable property of numerical algorithms. The precise definition of stability depends on the context, but it is related to the accuracy of the algorithm. A related… … Wikipedia
Radius of convergence — In mathematics, the radius of convergence of a power series is a quantity, either a non negative real number or ∞, that represents a domain (within the radius) in which the series will converge. Within the radius of convergence, a power series… … Wikipedia
Numerical control — CNC redirects here. For other uses, see CNC (disambiguation). A CNC Turning Center … Wikipedia
Numerical Control — Als Numerische Steuerung NC (engl.: Numerical Control) bezeichnet man ein elektronisches Gerät zur Steuerung insbesondere von Werkzeugmaschinen, das in der Lage ist, einen Datensatz von Steuerungsbefehlen von einem Datenträger zu lesen, in… … Deutsch Wikipedia
Numerical approximations of π — This page is about the history of numerical approximations of the mathematical constant pi;. There is a summarizing table at chronology of computation of pi;. See also history of pi; for other aspects of the evolution of our knowledge about… … Wikipedia
Earth radius — The Earth s shape, like that of all major planets, approximates a sphere. A true sphere has a unique radius, but on Earth the distance from the mean sea level at each point on the surface to the center (the radius of the Earth at a point on the… … Wikipedia
Computerized Numerical Control — CNC Universalfräsmaschine mit 5 Achssteuerung CNC Bedienfeld … Deutsch Wikipedia
Turning radius — The turning radius or turning circle of a vehicle is the radius of the smallest circular turn (ie. U turn) that the vehicle is capable of making.It is often used as a generalized term rather than a numerical figure. For example, a vehicle with a… … Wikipedia
Convexoid operator — In mathematics, especially operator theory, a convexoid operator is a bounded linear operator T on a complex Hilbert space H such that the closure of the numerical range coincides with the convex hull of its spectrum. An example of such an… … Wikipedia
