Title: The Drinfeld and Quillen formal groupsAbstract: The Cartier–Witt stack, introduced recently by Drinfeld and Bhatt–Lurie, is a geometric object whose quasicoherent sheaves provide a natural target category for prismatic cohomology. Over this stack, Drinfeld has defined a certain formal group involved in the construction of prismatic Chern classes, and conjectured that this formal group […]

Title: Exodromy beyond conicality Abstract: Let (X, P) be a stratified space. The most general version of the exodromy equivalence between constructible sheaves on (X, P) and functors out of the exit-path ∞-category of (X, P) currently available requires that the stratification of X be conical. Unfortunately, many stratifications naturally arising in geometry are not conical. […]