A Grothendieck opfibration approach to constructions of Waldhausen category

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:Zhenxing Di (Huaqiao University)
: 2024-10-25 15:45
:Conference Room C503 at Administration Building at Haiyun Campus

Speaker:Zhenxing Di (Huaqiao University)

Time:2024-10-25, 15:45

Location:Conference Room C503 at Administration Building at Haiyun Campus

Abstract:

Given a Grothendieck opfibration p: TB, we describe a method to construct a Waldhausen category structure on the total category T via combining Waldhausen category structures on the fibers TA for AOb(B) and the basis category B. As an application, we show that if E is a Waldhausen category with small coproducts such that the class of cofibrations is the left part of a weak factorization system in E, then the representation category Rep(Q, coE) of a left rooted quiver Q is a Waldhausen category, where coE is the subcategory of E whose morphisms are cofibrations.