Chain duality I (Ex)
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Let be an additive category and let be the category of bounded chain complexes in . Using the double complex extend to a contravariant functor
Observe that if is concentrated between dimensions and then is concentrated between dimensions and .
References
$ and $n$ then $T(C)$ is concentrated between dimensions be an additive category and let be the category of bounded chain complexes in . Using the double complex extend to a contravariant functorObserve that if is concentrated between dimensions and then is concentrated between dimensions and .
References
$ and $-n$. == References == {{#RefList:}} [[Category:Exercises]] [[Category:Exercises without solution]]\Aa be an additive category and let be the category of bounded chain complexes in . Using the double complex extend to a contravariant functorObserve that if is concentrated between dimensions and then is concentrated between dimensions and .