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- In mathematics, the '''Bockstein spectral sequence''' is a [[spectral sequence]] relating the homology with mod ''p'' coefficients and the h This gives the first page of the spectral sequence: we take <math>E_{s,t}^1 = H_{s+t}(C \otimes \Z/p)</math> with the ...3 KB (501 words) - 21:52, 2 June 2022
- {{short description|On when a morphism of spectral sequences in homological algebra is an isomorphism}} ...her Zeeman]],{{sfnp|Zeeman|1957}} gives conditions for a [[morphism]] of [[spectral sequence]]s to be an isomorphism. ...4 KB (593 words) - 19:53, 14 February 2024
- ...[mathematics]], the '''Čech-to-derived functor spectral sequence''' is a [[spectral sequence]] that relates [[Čech cohomology]] of a [[sheaf (mathematics)|shea ...to the cover <math>\mathfrak{U}</math>. Then the Čech-to-derived functor spectral sequence is:{{sfn|Godement|1973|loc=Théorème 5.4.1}} ...3 KB (393 words) - 06:13, 6 October 2018
- [[Image:DPSS figure.svg|thumb|230px|The three leading Slepian sequences for T=1000 and 2WT=6. Note that each higher order sequence has an extra zer ...maximally localized on a given [[frequency]] interval, as measured by the spectral concentration. ...6 KB (854 words) - 16:06, 25 February 2025
- In [[mathematics]], the '''Freudenthal spectral theorem''' is a result in [[Riesz space|Riesz space theory]] proved by [[Ha ...operator]]s can all be shown to follow as special cases of the Freudenthal spectral theorem. ...4 KB (527 words) - 00:07, 3 November 2022
- ...]]''' (named after [[Alfred Frölicher]], who actually discovered it). This spectral sequence describes the precise relationship between the [[Dolbeault cohom ==Description of the spectral sequence== ...7 KB (1,027 words) - 04:17, 9 June 2024
- ...math> with the following [[decomposition of spectrum (functional analysis)|spectral decomposition]]: ...ta}^{X^{n}}</math> to refer also to the set of <math>\delta</math>-typical sequences: ...6 KB (913 words) - 01:33, 15 May 2021
- ...onal homotopy theory]], the '''Halperin conjecture''' concerns the [[Serre spectral sequence]] of certain fibrations. It is named after the [[Canadian]] mathem ...<math> F </math> has non-zero [[Euler characteristic]]), then the [[Serre spectral sequence]] associated to the fibration collapses at the <math> E_2 </math> ...3 KB (441 words) - 02:34, 7 May 2024
- ...Spectrum (topology)|spectra]] yielding a tool for constructing the [[Adams spectral sequence]]. Essentially, the idea is to take a connective spectrum of finit ...um <math>MU</math>, and is used in the construction of the [[Adams–Novikov spectral sequence]]<ref name=":0" /><sup>pg 49</sup>. ...8 KB (1,255 words) - 14:44, 10 January 2025
- ...by performing [[Fourier analysis]] on signals derived from segments of DNA sequences. Because of its predictive power, it has been used as a preliminary indicat ...em after the symbolic string is properly mapped to one (or more) numerical sequences. The reason for this periodicity is due to the biased distribution towards ...15 KB (2,413 words) - 09:15, 12 December 2023
- ...n fiber]]s. It also naturally arises in many [[spectral sequence]]s; see [[spectral sequence#Edge maps and transgressions]]. ...3 KB (459 words) - 11:46, 28 November 2024
- ...he fiber <math>f^{-1}(X)</math>, which is a subcategory, consists of exact sequences whose third term is ''X''. This makes ''E'' a [[fibered category|category f ...and <math>H_p(X, \Z ) \simeq H_p(Y, \Z ), p \ge 0</math>. Now, the [[Serre spectral sequence]]s for <math>Ff \to X \to Y</math> and <math>* \to Y \to Y</math> ...10 KB (1,703 words) - 03:26, 22 September 2023
- ...ence space of an operator ideal to taking [[Cesàro mean]]s. This explicit spectral characterisation reduces problems and questions about commutators and [[sin </ref> As a student American mathematician Gary Weiss began to investigate spectral conditions for commutators of [[Hilbert–Schmidt operators]].<ref name="GW1" ...14 KB (2,068 words) - 02:29, 28 January 2024
- ...braic topology, he specialised in [[homotopy theory]]. The ''Bousfield-Kan spectral sequence'', [[Bousfield localization]] of [[spectrum (topology)|spectra]] a | title=The homotopy spectral sequence of a space with coefficients in a ring ...6 KB (681 words) - 16:52, 16 August 2024
- ...matrix''' is a graphical representation of [[similarity measure|similar]] sequences in a data series. ...nce matrix]]), [[correlation]], or comparison of local [[histogram]]s or [[spectral properties]] (e.g. IXEGRAM<ref>{{cite journal|author1= M. A. Casey |author2 ...4 KB (570 words) - 03:42, 3 February 2025
- ...ecially continuous processes with high frequency components to their power spectral densities, may have multiple upcrossings or multiple peaks in rapid success ...'')}} with [[variance]] {{math|σ<sub>''y''</sub><sup>2</sup>}} and [[power spectral density]] {{math|Φ<sub>''y''</sub>(''f'')}}, where {{mvar|f}} is a frequenc ...8 KB (1,147 words) - 22:17, 9 August 2023
- ...djoint Jacobi operators acting on the [[Hilbert space]] of square summable sequences over the [[positive integers]] <math>\ell^2(\mathbb{N})</math>. In this cas ...gree ''n'' and these polynomials are [[orthonormal]] with respect to the [[spectral measure]] corresponding to the first basis vector <math>\delta_{1,n}</math> ...5 KB (761 words) - 04:45, 30 November 2024
- ...ery nonzero <math>\lambda\in\sigma(T)</math> is an eigenvalue. This same "spectral theorem" consisting of (i)-(iv) is satisfied for inessential operators in ' ...math>, is strictly singular. Here <math>c_0</math> is the Banach space of sequences converging to zero. This is a corollary of Pitt's theorem, which states th ...8 KB (1,302 words) - 09:20, 3 April 2024
- The '''spectral test''' is a statistical test for the quality of a class of [[pseudorandom }}</ref> The spectral test compares the distance between these planes; the further apart they are ...10 KB (1,374 words) - 02:59, 18 January 2025
- ...of [[Lp space#The p-norm in countably infinite dimensions|square-summable sequences]] and spaces of [[Hilbert space#Examples|square-integrable functions]]. Lin Singular traces measure the asymptotic spectral behaviour of operators and have found applications in the [[noncommutative ...27 KB (4,070 words) - 11:20, 8 February 2024