Essential spectrum — In mathematics, the essential spectrum of a bounded operator is a certain subset of its spectrum, defined by a condition of the type that says, roughly speaking, fails badly to be invertible .The essential spectrum of self adjoint operatorsIn… … Wikipedia
Dimension stone — Large blocks of granite dimension stone being loaded at Teignmouth in 1827. Dimension stone is natural stone or rock that has been selected and fabricated (i.e., trimmed, cut, drilled, ground, or other) to specific sizes or shapes. Color, texture … Wikipedia
dimension — noun 1 (often dimensions) measurements ADJECTIVE ▪ approximate ▪ exact, precise ▪ It is important to measure the exact dimensions of the room. ▪ overall … Collocations dictionary
essential — adj. VERBS ▪ appear, be, seem ▪ become ▪ It is becoming almost essential for students to have a second language. ▪ remain ▪ … Collocations dictionary
Essential manifold — In mathematics, in algebraic topology and differential geometry, the notion of an essential manifold seems to have been first introduced explicitly in Mikhail Gromov s classic text in 83 (see below). DefinitionA closed manifold M is called… … Wikipedia
The Adventures of Buckaroo Banzai Across the 8th Dimension — Infobox Film name = The Adventures of Buckaroo Banzai Across the 8th Dimension image size = caption = Theatrical poster director = W. D. Richter producer = W. D. Richter Neil Canton writer = Earl Mac Rauch narrator = starring = Peter Weller John… … Wikipedia
Critical dimension — For the minimum feature size in photolithography, see Photolithography. In the renormalization group analysis of phase transitions in physics, a critical dimension is the dimensionality of space at which the character of the phase transition… … Wikipedia
The Essential Byrds — Infobox Album | Name = The Essential Byrds Type = Compilation Album Artist = The Byrds Released = April 22 2003 Recorded = 20 January 1965–25 July 1971 Genre = Rock Length = 94:40 Label = Columbia/Legacy Producer = Terry Melcher, Allen Stanton,… … Wikipedia
Gromov's systolic inequality for essential manifolds — In Riemannian geometry, M. Gromov s systolic inequality for essential n manifolds M dates from 1983. It is a lower bound for the volume of an arbitrary metric on M, in terms of its homotopy 1 systole. The homotopy 1 systole is the least length of … Wikipedia
Laborem Exercens — was an encyclical written by Pope John Paul II in 1981, on human work. It is part of a larger body of writings known as Catholic social teaching, that trace their origin to Rerum Novarum which was issued by Pope Leo XIII in 1891.External links*… … Wikipedia
