edge of manifold
71Klein bottle — In mathematics, the Klein bottle is a certain non orientable surface, i.e. , a surface (a two dimensional manifold) with no distinct inner and outer sides. Other related non orientable objects include the Möbius strip and the real projective… …
72N-sphere — can project a sphere s surface to a plane, it can also project a 3 sphere s surface into 3 space. This image shows three coordinate directions projected to 3 space:parallels (red), meridians (blue) and hypermeridians (green).Due to the conformal… …
73Betti number — In algebraic topology, the Betti number of a topological space is, in intuitive terms, a way of counting the maximum number of cuts that can be made without dividing the space into two pieces. This defines, in fact, what is called the first Betti …
74Phase Space (book) — Infobox Book name = Phase Space author = Stephen Baxter cover artist = country = Great Britain language = English series = Manifold genre = Science fiction publisher = Voyager release date = 2003 media type = Print (Hardback Paperback) pages =… …
75Real projective plane — In mathematics, the real projective plane is the space of lines in R3 passing through the origin. It is a non orientable two dimensional manifold, that is, a surface, that has basic applications to geometry, but which cannot be embedded in our… …
76Solid modeling — The geometry in solid modeling is fully described in 3‑D space; objects can be viewed from any angle. Modeled and ray traced in Cobalt Solid modeling (or modelling) is a consistent set of principles for mathematical and computer modeling of three …
77GM LS engine — Infobox Automobile engine name=GM LS engine aka=GM Vortec engine manufacturer=General Motors production=1997–present class=OHV V8 predecessor=GM LT engine, Chevrolet Small Block engine, Chevrolet Big Block engine successor= similar=Ford Modular… …
78Grindon, Staffordshire — Grindon is a small village in the Staffordshire Peak District (gbmapping|SK085545).Grindon is on the western edge of the limestone scenery surrounding the Manifold Valley, south of Butterton and south west of Wettonmill. Much of the village is… …
79Ignition timing — in an internal combustion engine is the process of setting the time that a spark will occur in the combustion chamber (during the power stroke) relative to piston position and crankshaft angular velocity. Setting the correct ignition timing is… …
80Dehn function — In the mathematical subject of geometric group theory, a Dehn function, named after Max Dehn, is an optimal function associated to a finite group presentation which bounds the area of a relation in that group (that is a freely reduced word in the …
