3 papers
math.NT2021★ 1 cited
Non-invariance of the Brauer-Manin obstruction for surfaces
Han Wu
In this paper, we study the properties of weak approximation with Brauer-Manin obstruction and the Hasse principle with Brauer-Manin obstruction for surfaces with respect to field…
math.NT2020
Châtelet surfaces and non-invariance of the Brauer-Manin obstruction for -folds
Han Wu
In this paper, we construct three kinds of Châtelet surfaces, which have some given arithmetic properties with respect to field extensions of number fields. We then use these const…
math.AG2016
Central leaves in loop groups
Eva Viehmann, Han Wu
This paper analyses the finer structure of Newton strata in loop groups. These can be decomposed into so-called central leaves. We define them, and determine their global geometric…