Spectral objects in abelian categories #
Let X be a spectral object index by the category ι
in the abelian category C. The purpose of this file
is to introduce the homology X.E of the short complex X.shortComplex
(X.H n₀).obj (mk₁ f₃) ⟶ (X.H n₁).obj (mk₁ f₂) ⟶ (X.H n₂).obj (mk₁ f₁)
when f₁, f₂ and f₃ are composable morphisms in ι and the
equalities n₀ + 1 = n₁ and n₁ + 1 = n₂ hold (both maps in the
short complex are given by X.δ). All the relevant objects in the
spectral sequence attached to spectral objects can be defined
in terms of this homology X.E: the objects in all pages, including
the page at infinity.
References #
- [Jean-Louis Verdier, Des catégories dérivées des catégories abéliennes, II.4][verdier1996]
The short complex consisting of the composition of
two morphisms X.δ, given three composable morphisms f₁, f₂
and f₃ in ι, and three consecutive integers.
Instances For
The homology of the short complex shortComplex consisting of
two morphisms X.δ. In the documentation, we shorten it as E^n₁(f₁, f₂, f₃)
Instances For
The functoriality of shortComplex with respect to morphisms
in ComposableArrows ι 3.
Instances For
The functoriality of E with respect to morphisms
in ComposableArrows ι 3.
Instances For
E^n₁(f₁, f₂, f₃) identifies to the cokernel
of δToCycles : H^{n₀}(f₃) ⟶ Z^{n₁}(f₁, f₂).
Instances For
The cycles of the short complex shortComplex at E^{n₁}(f₁, f₂, f₃)
identifies to Z^{n₁}(f₁, f₂).
Instances For
The epimorphism Z^{n₁}(f₁, f₂) ⟶ E^{n₁}(f₁, f₂, f₃).
Instances For
The (exact) sequence H^{n-1}(f₃) ⟶ Z^n(f₁, f₂) ⟶ E^n(f₁, f₂, f₃) ⟶ 0.
Instances For
The short complex H^{n-1}(f₃) ⟶ Z^n(f₁, f₂) ⟶ E^n(f₁, f₂, f₃) identifies
to the cokernel sequence of the definition of the homology of the short
complex shortComplex as a cokernel of ShortComplex.toCycles.
Instances For
E^n₁(f₁, f₂, f₃) identifies to the kernel
of δFromOpcycles : opZ^{n₁}(f₂, f₃) ⟶ H^{n₂}(f₁).
Instances For
The opcycles of the short complex shortComplex at E^{n₁}(f₁, f₂, f₃)
identifies to opZ^{n₁}(f₂, f₃).
Instances For
The monomorphism E^{n₁}(f₁, f₂, f₃) ⟶ opZ^{n₁}(f₂, f₃) ⟶ .
Instances For
The (exact) sequence 0 ⟶ E^n(f₁, f₂, f₃) ⟶ opZ^n(f₂, f₃) ⟶ H^{n+1}(f₁).
Instances For
The short complex E^n(f₁, f₂, f₃) ⟶ opZ^n(f₂, f₃) ⟶ H^{n+1}(f₁) identifies
to the kernel sequence of the definition of the homology of the short
complex shortComplex as a kernel of ShortComplex.fromOpcycles.
Instances For
The (exact) sequence H^n(f₁) ⊞ H^{n-1}(f₃) ⟶ H^n(f₁ ≫ f₂) ⟶ E^n(f₁, f₂, f₃) ⟶ 0.
Instances For
Constructor for morphisms for E^{n₁}(f₁, f₂, f₃).
Instances For
The (exact) sequence 0 ⟶ E^n(f₁, f₂, f₃) ⟶ H^n(f₂ ≫ f₃) ⟶ H^n(f₃) ⊞ H^{n+1}(f₁).
Instances For
Constructor for morphisms to E^{n₁}(f₁, f₂, f₃).
Instances For
The map opZ^n(f₁ ≫ f₂, f₃) ⟶ E^n(f₁, f₂, f₃).
Instances For
The (exact) sequence H^n(f₁) ⟶ opZ^n(f₁ ≫ f₂, f₃) ⟶ E^n(f₁, f₂, f₃) ⟶ 0.
Instances For
The map E^n(f₁, f₂, f₃) ⟶ Z^n(f₁, f₂ ≫ f₃).
Instances For
The (exact) sequence 0 ⟶ E^n(f₁, f₂, f₃) ⟶ Z^n(f₁, f₂ ≫ f₃) ⟶ H^n(f₃).
Instances For
An homology data for X.shortComplex n₀ n₁ n₂ hn₁ hn₂ (𝟙 i) f (𝟙 j),
expressing H^n₁(f) as the homology of this short complex,
see EIsoH.
Instances For
For any morphism f : i ⟶ j, this is the isomorphism from
E^n₁(𝟙 i, f, 𝟙 j) to H^n₁(f).
Instances For
The isomorphism Z^n(𝟙 _, f) ≅ H^n(f).
Instances For
The isomorphism opZ^n(f, 𝟙 _) ≅ H^n(f).
Instances For
The short exact sequence
0 ⟶ opZ^(f₁, f₂ ≫ f₃) ⟶ opZ^n(f₁ ≫ f₂, f₃) ⟶ H^n(f₁, f₂, f₃) ⟶ 0.