Примеры использования Spectral sequence на Английском языке и их переводы на Русский язык
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We will construct this spectral sequence by hand.
Leray- Serra Spectral Sequence for Tolerant Quasifibering of Tolerant Ways.
If p0 and q0 can be chosen to be zero, this is called a first-quadrant spectral sequence.
For example, this is true of the spectral sequence of a double complex, explained below.
This spectral sequence is doubly graded by the filtration degree p and the complementary degree q n- pp.
It is very common for n p+ q to be another natural index in the spectral sequence. n runs diagonally, northwest to southeast.
Another common spectral sequence is the spectral sequence of a double complex.
It is straightforward to check that the homology of Er with respect to this differential is Er+1,so this gives a spectral sequence.
We say that the spectral sequences degenerates at sheet r if, for any s≥ r, the differential ds is zero.
This is whathappened in our first, trivial example of an unfiltered chain complex: The spectral sequence degenerated at the first sheet.
In most spectral sequences, the E∞{\displaystyle E_{\infty}} term is not naturally a doubly graded object.
Putting the zero differential on all the rest of our sheets gives a spectral sequence whose terms are: E0 C• Er H(C•) for all r≥ 1.
Sheaves, sheaf cohomology, and spectral sequences were invented by Jean Leray at the prisoner-of-war camp Oflag XVII-A in Austria.
Determining differentials orfinding ways to work around them is one of the main challenges to successfully applying a spectral sequence.
For a homological spectral sequence, the terms are written E p, q r{\displaystyle E_{p, q}^{r}} and the differentials have bidegree- r, r- 1.
It is very common to write the E 2 p, q{\displaystyle E_{2}^{p, q}} term on the left-hand side of the abutment,because this is the most useful term of most spectral sequences.
For a cohomological spectral sequence, the terms are written E r p, q{\displaystyle E_{r}^{p, q}} and the differentials have bidegree r, 1- r.
In the article the tolerant bundle of ways with tolerant collapsible bundlespace is constructed and the tolerant analogue of the Gurevich's the oremisproved by mean sofexact homotopic sequence and homology spectral sequence of tolerant bundles.
For example, for the spectral sequence of a filtered complex, described below, r0 0, but for the Grothendieck spectral sequence, r0 2.
Of course, such E∞{\displaystyle E_{\infty}} need not exist in the category,but this is usually a non-issue since for example in the category of modules such limits exist or since in practice a spectral sequence one works with tends to degenerate; there are only finitely many inclusions in the sequence above.
According to the general theory of spectral sequences the first andthe second terms of spectral sequence of tolerant exfoliations are got.
The spectral sequence also converges if E r p, q{\displaystyle E_{r}^{p, q}} vanishes for all p less than some p0 and for all q less than some q0.
In homological algebra andalgebraic topology, a spectral sequence is a means of computing homology groups by taking successive approximations.
A spectral sequence is a choice of a nonnegative integer r0 and a collection of three sequences: For all integers r≥ r0, an object Er, called a sheet(as in a sheet of paper), or sometimes a page or a term, Endomorphisms dr: Er→ Er satisfying dr o dr 0, called boundary maps or differentials, Isomorphisms of Er+1 with H(Er), the homology of Er with respect to dr.
In the ungraded situation described above, r0 is irrelevant,but in practice most spectral sequences occur in the category of doubly graded modules over a ring R or doubly graded sheaves of modules over a sheaf of rings.
There is a spectral sequence relating the global Ext and the sheaf Ext: let F, G be sheaves of modules over a ringed space( X, O){\displaystyle(X,{\mathcal{O}})}; e.g., a scheme.
The article constructs Leray- Serra homological spectral sequence for tolerant quasifibering of tolerant ways and computes the two first members of this sequence. .
Similarly, the spectral sequence also converges if E r p, q{\displaystyle E_{r}^{p, q}} vanishes for all p greater than some p0 and for all q greater than some q0.
We will construct a spectral sequence from this filtration where coboundaries and cocycles in later sheets get closer and closer to coboundaries and cocycles in the original complex.
A doubly graded spectral sequence has a tremendous amount of data to keep track of, but there is a common visualization technique which makes the structure of the spectral sequence clearer.