Definition of Cochain. Meaning of Cochain. Synonyms of Cochain

Here you will find one or more explanations in English for the word Cochain. Also in the bottom left of the page several parts of wikipedia pages related to the word Cochain and, of course, Cochain synonyms and on the right images related to the word Cochain.

Definition of Cochain

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Meaning of Cochain from wikipedia

- exact. A cochain complex is similar to a chain complex, except that its homomorphisms are in the opposite direction. The homology of a cochain complex...
- usually one ****ociated with a topological space, often defined from a cochain complex. Cohomology can be viewed as a method of ****igning richer algebraic...
- whole interval which makes the difference quotient a 1 {\displaystyle 1} -cochain. The most common notation for the difference quotient is: Δ f Δ x ( x +...
- {F}})} is an abelian group by pointwise addition. The cochain groups can be made into a cochain complex ( C ∙ ( U , F ) , δ ) {\displaystyle (C^{\bullet...
- homology is an oriented link invariant that arises as the cohomology of a cochain complex. It may be regarded as a categorification of the Jones polynomial...
- quasi-isomorphism or quism is a morphism A → B of chain complexes (respectively, cochain complexes) such that the induced morphisms H n ( A ∙ ) → H n ( B ∙ )  ...
- In mathematics a cocycle is a closed cochain. Cocycles are used in algebraic topology to express obstructions (for example, to integrating a differential...
- This is an abelian group; its elements are called the (inhomogeneous) n-cochains. The coboundary homomorphisms are defined by { d n + 1 : C n ( G , M )...
- {g}},M)} are called cochains from g {\displaystyle {\mathfrak {g}}} to M {\displaystyle M} . A homogeneous n {\displaystyle n} -cochain from g {\displaystyle...
- po****r mathematics.) There is also a related notion of the cohomology of a cochain complex, giving rise to various cohomology theories, in addition to the...