Definition 5.2.
An acyclic class in \(T\) is a saturated class of morphisms that is stable under base change. We write \(\Acyc(T)\) for the partially ordered set of acyclic classes in \(T\).
Definition 5.2.
An acyclic class in \(T\) is a saturated class of morphisms that is stable under base change. We write \(\Acyc(T)\) for the partially ordered set of acyclic classes in \(T\).