Jiaqun Wei

activity

20242026

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4 papers · 1 filter

math.RT2026

On simples in a cosilting heart and mutation of cosilting pairs

Ramin Ebrahimi, Rasool Hafezi, Jiaqun Wei

Let $A$ be a finite dimensional algebra. The lattice of torsion pairs in $mod (A)$ is controlled by cosilting pairs, infinitely generated analogues of support $τ^{-}$ -tilting pai…

math.RT2026

Model structures arising from weak cotorsion pairs

Ramin Ebrahimi, Rasool Hafezi, Jiaqun Wei

Let $A$ be an abelian category. Beligiannis and Reiten proved that there is a bijective correspondence between so-called projective model structures on $A$ and…

math.RT2026

Revising Auslander-Gruson-Jensen duality

Ramin Ebrahimi, Rasool Hafezi, Jiaqun Wei

For a ring $A$ there is a well-known duality between definable subcategories of right $A$ -modules and definable subcategories of left $A$ modules. This is a consequence of Auslande…

math.RT2026

AIR tilting subcategories of extended hearts

Jiaqun Wei, Yu Zhou

We introduce the notion of AIR tilting subcategories of extended hearts of $t$ -structures on a triangulated category associated with silting subcategories. This notion generalizes…