Point at infinity complex field, the set of points at infinity is a manifold. In artistic drawing and technical perspective, the projection on the picture plane of the point at infinity of a class of parallel lines is called their vanishing point. In hyperbolic geometry, points at infinity are typically named ideal points. Unlike Euclidean and elliptic geometries, each line has two points at infinity: given a line "l" and a point "P" not on "l", the right- and left-limiting parallels converge asymptotically to different points at infinity. All points at infinity together form the Cayley absolute or boundary of a hyperbolic plane.
Horizon Lines Horizon Lines Horizon Lines, Inc. was an American domestic ocean shipping and logistics company headquartered in Charlotte, North Carolina. It was the largest Jones Act maritime shipping and logistics company and accounted for approximately 37% of all US container shipments linking the continental United States to Alaska, Hawaii and Puerto Rico. Under the Jones Act, maritime shipments between US ports is restricted to US-built, owned, and flagged vessels operated by predominantly US-citizen crews. The company originated from Sea-Land Service, Inc. The domestic liner operations of Sea-Land were sold in 2003 and thereafter operated under the name Horizon Lines. Horizon became