# Empty+space

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**Cycle space**— This article is about a concept in graph theory. For space allocated to bicycles, see segregated cycle facilities. In graph theory, an area of mathematics, a cycle space is a vector space defined from an undirected graph; elements of the cycle… …112

**T/Space**— Infobox Company name = Transformational Space Corporation (t/Space) type = Private genre = Commercial spaceflight foundation = Early 2004 founder = location city = Reston, Virginia location country = United States location = locations = area… …113

**Orlan space suit**— Cosmonaut Maksim Surayev next to two Orlan MK models An Orlan space suit (Russian: Орлан meaning sea eagle) is a series of semi rigid one piece space suit models designed and built by NPP Zvezda. They have been used for spacewalks (EVAs) in the… …114

**Sequential space**— In topology and related fields of mathematics, a sequential space is a topological space that satisfies a very weak axiom of countability. Sequential spaces are the most general class of spaces for which sequences suffice to determine the… …115

**Perfect space**— In mathematics, in the field of topology, perfect spaces are spaces that have no isolated points. In such spaces, every point can be approximated arbitrarily well by other points given any point and any topological neighborhood of the point,… …116

**Portal:Space**— The Space Portal   Main     …117

**Sierpiński space**— In mathematics, Sierpiński space (or the connected two point set) is a finite topological space with two points, only one of which is closed.It is the smallest example of a topological space which is neither trivial nor discrete. It is named… …118

**Deep Space**— may refer to: Film Deep Space, a 1988 horror sci fi movie. Contents 1 Film 2 Star Trek 3 …119

**Compact operator on Hilbert space**— In functional analysis, compact operators on Hilbert spaces are a direct extension of matrices: in the Hilbert spaces, they are precisely the closure of finite rank operators in the uniform operator topology. As such, results from matrix theory… …120

**Hyperconnected space**— In mathematics, a hyperconnected space is a topological space X that cannot be written as the union of two proper closed sets. The name irreducible space is preferred in algebraic geometry.For a topological space X the following conditions are… …