**noncollinear** — adj. * * * … Universalium

**noncollinear** — adj … Useful english dictionary

**Optical parametric amplifier** — An optical parametric amplifier, abbreviated OPA, is a laser light source that emits light of variable wavelengths by an optical parametric amplification process. Contents 1 Optical parametric generation (OPG) 2 Optical parametric amplification… … Wikipedia

**Affine space** — In mathematics, an affine space is an abstract structure that generalises the affine geometric properties of Euclidean space. In an affine space, one can subtract points to get vectors, or add a vector to a point to get another point, but one… … Wikipedia

**Optical amplifier** — An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from… … Wikipedia

**Liquid oxygen** — This article is about the liquid form of the element oxygen. For the commercial product, see Liquid Oxygen (supplement). LOX redirects here. For other uses, see Lox (disambiguation). The blue colour of liquid oxygen in a dewar flask Liquid oxygen … Wikipedia

**Concyclic points** — In geometry, a set of points is said to be concyclic (or cocyclic) if they lie on a common circle. Concyclic points, showing that the perpendicular bisectors of pairs are concurrent … Wikipedia

**Sylvester–Gallai theorem** — The Sylvester–Gallai theorem asserts that given a finite number of points in the Euclidean plane, either all the points are collinear; or there is a line which contains exactly two of the points. This claim was posed as a problem by J. J.… … Wikipedia

**Tarski's axioms** — Tarski s axioms, due to Alfred Tarski, are an axiom set for the substantial fragment of Euclidean geometry, called elementary, that is formulable in first order logic with identity, and requiring no set theory. Other modern axiomizations of… … Wikipedia

**No-three-in-line problem** — A set of 20 points in a 10 × 10 grid, with no three points in a line. In mathematics, in the area of discrete geometry, the no three in line problem, introduced by Henry Dudeney in 1917, asks for the maximum number of points that can be placed in … Wikipedia