2016/11/07 by Alessandra Bertapelle, Bertapelle, Alessandra, Cristian D. Gonzalez-Aviles +1
Mathematics · #14A99 #Algebraic Geometry (math.AG) #FOS: Mathematics #Number Theory (math.NT) #math.AG #math.NT #msc:14A99
paper · pdf · doi:10.48550/arxiv.1611.02060
25 pages
arxiv created 2016/11/07 · arxiv updated 2016/11/08
This is a chiefly expository paper on the subject of the title which, in our view, has not received a detailed treatment in the literature which is commensurate with its importance. We expect the results presented here to be useful in a number of contexts. For example, several of them will be applied in a forthcoming paper by the authors.