double ruled surface
1Ruled surface — A hyperboloid of one sheet is a doubly ruled surface: it can be generated by either of two families of straight lines. In geometry, a surface S is ruled if through every point of S there is a straight line that lies on S. The most familiar… …
2double spare — Strike Strike, n. 1. The act of striking. [1913 Webster] 2. An instrument with a straight edge for leveling a measure of grain, salt, and the like, scraping off what is above the level of the top; a strickle. [1913 Webster] 3. A bushel; four… …
3Skew surface — Skew Skew, a. Turned or twisted to one side; situated obliquely; skewed; chiefly used in technical phrases. [1913 Webster] {Skew arch}, an oblique arch. See under {Oblique}. {Skew back}. (Civil Engin.) (a) The course of masonry, the stone, or the …
4Tensile structure — A tensile structure is a construction of elements carrying only tension and no compression or bending. The term tensile should not be confused with tensegrity, which is a structural form with both tension and compression elements.Most tensile… …
5Differential geometry of surfaces — Carl Friedrich Gauss in 1828 In mathematics, the differential geometry of surfaces deals with smooth surfaces with various additional structures, most often, a Riemannian metric. Surfaces have been extensively studied from various perspectives:… …
6Hyperboloid — Not to be confused with Hyperbolic paraboloid. Hyperboloid of one sheet …
7Cone (geometry) — Not to be confused with the conical surface.. A right circular cone and an oblique circular cone A cone is an n dimensional geometric shape that tapers smoothly from a base (usually flat and circular) to a point called the apex or vertex.… …
8Möbius strip — This article is about the mathematical object. For musical group, see Mobius Band (band). A Möbius strip made with a piece of paper and tape. If an ant were to crawl along the length of this strip, it would return to its starting point having… …
9Conic bundle — In algebraic geometry, a conic bundle is an algebraic variety that appears as a solution of a Cartesian equation of the form Theoretically, it can be considered as a Severi–Brauer surface, or more precisely as a Châtelet surface. This can be a… …
10Canonical bundle — In mathematics, the canonical bundle of a non singular algebraic variety V of dimension n is the line bundle which is the nth exterior power of the cotangent bundle Ω on V. Over the complex numbers, it is the determinant bundle of holomorphic n… …
