Search for dissertations about: "Eric Ahlqvist"

Found 2 swedish dissertations containing the words Eric Ahlqvist.

  2. 1. Building Data for Stacky Covers and the Étale Cohomology Ring of an Arithmetic Curve : Du som saknar dator/datorvana kan kontakta [email protected] för information

    Author : Eric Ahlqvist; David Professor; Niels Borne; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Étale Cohomology; Number Field; Cup Product; Stacky Covers; Building Data; Ramified Covers; Mathematics; Matematik;

    Abstract : This thesis consists of two papers with somewhat different flavours. In Paper I we compute the étale cohomology ring H^*(X,Z/nZ) for X the ring of integers of a number field K. As an application, we give a non-vanishing formula for an invariant defined by Minhyong Kim. READ MORE

  4. 2. Stacky Modifications and Operations in the Étale Cohomology of Number Fields

    Author : Eric Ahlqvist; David Rydh; Alexander Schmidt; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; stacks; ramified covers; étale cohomology; cup product; Massey product; Galois cohomology; building data; 2-cocycles; Matematik; Mathematics;

    Abstract : This thesis consists of 4 papers. In Paper A we define stacky building data for stacky covers in the spirit of Pardini and give an equivalence of (2,1)- categories between the category of stacky covers and the category of stacky building data. READ MORE