saddle-shaped curvature

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• Principal curvature — Saddle surface with normal planes in directions of principal curvatures In differential geometry, the two principal curvatures at a given point of a surface are the eigenvalues of the shape operator at the point. They measure how the surface… …   Wikipedia

• Saddle — A saddle is a supportive structure for a rider or other load, fastened to an animal s back by a girth. The most common type is the equestrian saddle designed for a horse, but specialized saddles have been created for camels and other creatures.… …   Wikipedia

• Membrane curvature — is the geometrical measure or characterization of the curvature of membranes. The membranes can be naturally occurring or man made (synthetic). An example of naturally occurring membrane is the lipid bilayer of cells, also known as cellular… …   Wikipedia

• Parametric surface — A parametric surface is a surface in the Euclidean space R3 which is defined by a parametric equation with two parameters. Parametric representation is the most general way to specify a surface. Surfaces that occur in two of the main theorems of… …   Wikipedia

• furniture — furnitureless, adj. /ferr ni cheuhr/, n. 1. the movable articles, as tables, chairs, desks or cabinets, required for use or ornament in a house, office, or the like. 2. fittings, apparatus, or necessary accessories for something. 3. equipment for …   Universalium

• anticlastic — adjective a) curved in opposite ways in two directions; saddle shaped b) of a surface whose Gaussian curvature is negative at all points Ant …   Wiktionary

• gastric pacemaker — a saddle shaped area of the greater curvature of the stomach at the junction of its proximal and middle thirds, where electric potentials originate that regulate the frequency of gastric contractions …   Medical dictionary

• Equine conformation — [original research?] Parts of a horse Equine conformation evaluates the degree of correctness of a horse s bone structure, musculature, and its body proportions in relation to each other. Undesirable conformat …   Wikipedia

• Shape of the Universe — Edge of the Universe redirects here. For the Bee Gees song, see Edge of the Universe (song). The local geometry of the universe is determined by whether Omega is less than, equal to or greater than 1. From top to bottom: a spherical universe, a… …   Wikipedia

• Paraboloid — of revolution In mathematics, a paraboloid is a quadric surface of special kind. There are two kinds of paraboloids: elliptic and hyperbolic. The elliptic paraboloid is shaped like an oval cup and can have a maximum or minimum point. In a… …   Wikipedia

• Guitar — Infobox Instrument name=Guitar names= classification=String instrument (plucked, nylon stringed guitars usually played with fingerpicking, and steel , etc. usually with a pick.) range= (a regularly tuned guitar) related=*Bowed and plucked string… …   Wikipedia