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point spectrum

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  • Spectrum (functional analysis) — In functional analysis, the concept of the spectrum of a bounded operator is a generalisation of the concept of eigenvalues for matrices. Specifically, a complex number λ is said to be in the spectrum of a bounded linear operator T if… …   Wikipedia

  • Spectrum disorder — in psychiatry is a term used to describe a mental disorder when there is thought to be not a unitary disorder but rather a syndrome composed of subgroups that can range from relatively severe to relatively mild and nonclinical deficits .cite… …   Wikipedia

  • Spectrum analyzer — A spectrum analyzer Spectrum analyzer display A spectrum analyzer measures the magnitude of an input signal versus frequency with …   Wikipedia

  • Spectrum of a C*-algebra — The spectrum of a C* algebra or dual of a C* algebra A, denoted Â, is the set of unitary equivalence classes of irreducible * representations of A. A * representation π of A on a Hilbert space H is irreducible if, and only if, there is no closed… …   Wikipedia

  • Spectrum of a ring — In abstract algebra and algebraic geometry, the spectrum of a commutative ring R , denoted by Spec( R ), is defined to be the set of all proper prime ideals of R . It is commonly augmented with the Zariski topology and with a structure sheaf,… …   Wikipedia

  • Spectrum management — The spectrum is a conceptual tool used to organize and map the physical phenomena of electromagnetic waves. These waves propagate through space at different frequencies, and the set of all possible frequencies is called the electromagnetic… …   Wikipedia

  • Point spread function — The point spread function (PSF) describes the response of an imaging system to a point source or point object. A related but more general term for the PSF is a system s impulse response. The PSF in many contexts can be thought of as the extended… …   Wikipedia

  • Point 783 — Infobox Television episode Title = Point 783 Series = Captain Scarlet and the Mysterons Season = 1 Episode = 13 Airdate = December 22, 1967 Production = 4 Writer = Peter Curran David Williams Director = Robert Lynn Episode list = List of Captain… …   Wikipedia

  • Point of Departure (jazz album) — Infobox Album Name = Point of Departure Type = Album Artist = Andrew Hill Background = orange Released = Recorded = March 31 1964 Genre = Jazz Length = 56:38 Label = Blue Note Producer = Reviews = | Last album = Judgment! (1964) This album =… …   Wikipedia

  • Decomposition of spectrum (functional analysis) — In mathematics, especially functional analysis, the spectrum of an operator generalizes the notion of eigenvalues. Given an operator, it is sometimes useful to break up the spectrum into various parts. This article discusses a few examples of… …   Wikipedia

  • Continuous spectrum — The spectrum of a linear operator is commonly divided into three parts: point spectrum, continuous spectrum, and residual spectrum. If H is a topological vector space and is a linear map, the spectrum of A is the set of complex numbers λ such… …   Wikipedia

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