- improper point
- мат.несобственная точка
English-Russian scientific dictionary. 2008.
improper point
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Improper — ;In mathematics *Improper rotation *Improper integral *Improper fraction *Improper prior *Improper distribution *Improper point *Improper limits;Other *Improper English *Improper motion *Improper nounee also* Proper … Wikipedia
Improper integral — In calculus, an improper integral is the limit of a definite integral as an endpoint of the interval of integration approaches either a specified real number or ∞ or −∞ or, in some cases, as both endpoints approach limits.Specifically, an… … Wikipedia
Improper rotation — In 3D geometry, an improper rotation, also called rotoreflection or rotary reflection is, depending on context, a linear transformation or affine transformation which is the combination of a rotation about an axis and an inversion about the… … Wikipedia
Point groups in three dimensions — In geometry, a point group in three dimensions is an isometry group in three dimensions that leaves the origin fixed, or correspondingly, an isometry group of a sphere. It is a subgroup of the orthogonal group O(3), the group of all isometries… … Wikipedia
Point group — The Bauhinia blakeana flower on the Hong Kong flag has C5 symmetry; the star on each petal has D5 symmetry. In geometry, a point group is a group of geometric symmetries (isometries) that keep at least one point fixed. Point groups can exist in a … Wikipedia
Point system (driving) — A demerit point system is one in which a driver s licensing authority, police force, or other organization issues cumulative demerits, or points to drivers on conviction for road traffic offenses. Points may either be added or subtracted,… … Wikipedia
improper integral — noun : a definite integral whose region of integration includes a point at which the integrand is undefined or tends to infinity or whose region of integration does not have all limits finite * * * Math. 1. Also called infinite integral. a… … Useful english dictionary
improper integral — noun Date: 1939 a definite integral whose region of integration is unbounded or includes a point at which the integrand is undefined or tends to infinity … New Collegiate Dictionary
improper integral — Math. 1. Also called infinite integral. a definite integral in which one or both of the limits of integration is infinite. 2. a definite integral in which the integrand becomes infinite at a point or points in the interval of integration. [1940… … Universalium
improper integral — improp′er in′tegral n. 1) math. a definite integral whose area of integration is infinite 2) math. a definite integral in which the integrand becomes infinite at a point or points in the interval of integration • Etymology: 1940–45 … From formal English to slang
Crystallographic point group — In crystallography, a crystallographic point group is a set of symmetry operations, like rotations or reflections, that leave a central point fixed while moving other directions and faces of the crystal to the positions of features of the same… … Wikipedia
