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Duality and Serre functor in homotopy categories
For a (right and left) coherent ring , we show that there exists a duality
between homotopy categories {\mathbb{K}}^{{\rm{b}}}({\rm mod}{\mbox{-}}A^{{\rm
op}}) and {\mathbb{K}}^{{\rm{b}}}({\rm mod}{\mbox{-}}A). If is
an artin algebra of finite global dimension, this duality restricts to a
duality between their subcategories of acyclic complexes,
{\mathbb{K}}^{{\rm{b}}}_{\rm ac}({\rm mod}{\mbox{-}}\Lambda^{\rm op}) and
{\mathbb{K}}^{{\rm{b}}}_{\rm ac}({\rm mod}{\mbox{-}}\Lambda). As a result, it
will be shown that, in this case, {\mathbb{K}}_{\rm ac}^{{\rm{b}}}({\rm
mod}{\mbox{-}}\Lambda) admits a Serre functor and hence has Auslander-Reiten
triangles.Comment: arXiv admin note: text overlap with arXiv:1605.0474
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