4 papers
A note on fierce ramification
Hélène Esnault, Lars Kindler, Vasudevan Srinivas
We show that bounding ramification at infinity bounds fierce ramification. This answers positively a question of Deligne posed to the first named author.
Wild ramification of nilpotent coverings and coverings of bounded degree
Lars Kindler
A finite étale map between irreducible, normal varieties is called tame, if it is tamely ramified with respect to all partial compactifications whose boundary is the support of a s…
The homotopy sequence for regular singular stratified bundles
Giulia Battiston, Lars Kindler
A separable, proper morphism of varieties with geometrically connected fibers induces a homotopy exact sequence relating the étale fundamental groups of source, target and fiber. E…
The Picard Group of Simply Connected Regular Varieties and Stratified Line Bundles
Lars Kindler
We prove that the Picard group of a regular simply connected variety over an algebraically closed field of arbitrary characteristic is finitely generated. The main difficulty to ov…