# characteristic

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**Characteristic function**— In mathematics, characteristic function can refer to any of several distinct concepts: The most common and universal usage is as a synonym for indicator function, that is the function which for every subset A of X, has value 1 at points of A and… …82

**Characteristic 2 type**— In mathematical finite group theory, a group is said to be of characteristic 2 type or even type or of even characteristic if it resembles a group of Lie type over a field of characteristic 2. In the classification of finite simple groups, there… …83

**Characteristic x-ray**— A high energy electron interacts with a bound electron in an atom and ejects it. The incident electron is scattered and the target electron gets displaced from its shell. The incident electron energy must exceed the binding energy of the electron …84

**Characteristic time**— The characteristic time is an estimate of the order of magnitude of the reaction time scale. It can loosely be defined as the inverse of the reaction rate. In chemistry, the characteristic time is used to determine whether the problem needs to be …85

**Characteristic earthquakes**— Almost all geology is fractal and scale invariant. That means you should always put in a scale when taking pictures of rock formations. For example, in this picture, you can’t tell if it is 6 m or 6 km across. It’s actually an ASTER satellite… …86

**Characteristic multiplier**— In mathematics, and particularly ordinary differential equations, a characteristic multiplier is an eigenvalue of a monodromy matrix. The logarithm of a characteristic multiplier is also known as characteristic exponent. They appear in Floquet… …87

**Characteristic function (convex analysis)**— In the field of mathematics known as convex analysis, the characteristic function of a set is a convex function that indicates the membership (or non membership) of a given element in that set. It is similar to the usual indicator function, and… …88

**Characteristic property**— A characteristic property is a chemical or physical property that helps identify and classify substances. The characteristic properties of a substance are always the same whether the sample you are observing is large or small. Examples of… …89

**characteristic portfolio**— A portfolio which efficiently represents a particular asset characteristic. For a given characteristic, it is the minimum risk portfolio, with portfolio characteristic equal to 1. For example, the characteristic portfolio of asset betas is the… …90

**Characteristic energy**— In astrodynamics a characteristic energy ( ), a form of specific energy, is a measure of the energy required for an interplanetary mission that requires attaining an excess orbital velocity over an escape velocity required for additional orbital… …91

**Characteristic March**— La Characteristic March est un style de la musique ragtime, qui prend pour base la marche mais avec un rythme syncopé. Un nombre importants de morceaux du ragtime ont cette connotation de marche . Beaucoup de pièces ont été sous titrés March Two… …92

**characteristic fluorescent rays**— secondary rays emitted as a result of the rearrangement of electrons in the inner shells of atoms; identical with characteristic rays (q.v.) except that characteristic rays are caused by the bombardment of the x ray tube target by electrons,… …93

**characteristic X radiation**— būdingoji rentgeno spinduliuotė statusas T sritis fizika atitikmenys: angl. characteristic X radiation; characteristic X ray radiation; characteristic X rays vok. charakteristische Röntgenstrahlung, f; Eigenröntgenstrahlung, f;… …94

**characteristic X-ray radiation**— būdingoji rentgeno spinduliuotė statusas T sritis fizika atitikmenys: angl. characteristic X radiation; characteristic X ray radiation; characteristic X rays vok. charakteristische Röntgenstrahlung, f; Eigenröntgenstrahlung, f;… …95

**characteristic X-rays**— būdingoji rentgeno spinduliuotė statusas T sritis fizika atitikmenys: angl. characteristic X radiation; characteristic X ray radiation; characteristic X rays vok. charakteristische Röntgenstrahlung, f; Eigenröntgenstrahlung, f;… …96

**Characteristic energy length scale**— The characteristic energy length scale χ describes the size of the region from which energy flows to a rapidly moving crack. If material properties change within the characteristic energy length scale, local wave speeds can dominate crack… …97

**Characteristic sequence**— In mathematics, the characteristic sequence of a given sequence s is a sequence of 1 s and 0 s which tells which elements of s are in some set. Given two sets and a sequence s = of elements of B, the characteristic sequence of s is the sequence… …98

**characteristic root**— Math. 1. a scalar for which there exists a nonzero vector such that the scalar times the vector equals the value of the vector under a given linear transformation on a vector space. 2. a root of the characteristic equation of a given matrix. Also …99

**Characteristic earthquake**— A characteristic earthquake is a repeating, large earthquake that occurs more frequently than local seismic monitoring would suggest.[1] Characteristic earthquakes are usually defined from paleoseismology observations. This has important… …100

**Characteristic Line**— A line formed using regression analysis that summarizes a particular security or portfolio s systematic risk and rate of return. The rate of return is dependent on the standard deviation of the asset s returns and the slope of the characteristic… …