A Bijection theorem for Gorenstein projective τ-tilting modules

We introduce the notions of Gorenstein projective $τ$-rigid modules, Gorenstein projective support $τ$-tilting modules and Gorenstein torsion pairs and give a Gorenstein analog to Adachi-Iyama-Reiten's bijection theorem on support $τ$-tilting modules. More precisely, for an algebra $Λ$, We prove that there is a bijection between the set of Gorenstein projective support $τ$-tilting modules and the set of functorially finite Gorenstein projective torsion classes. As an application, we introduce the notion of CM-$τ$-tilting finite algebras and show that $Λ$ is CM-$τ$-tilting finite if and only if $Λ^{\rm {op}}$ is CM-$τ$-tilting finite. Moreover, we show that the Bongartz completion of a Gorenstein projective $τ$-rigid module need not be a Gorenstein projective $τ$-tilting module.

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