E-Dissertationen: Browsing E-Dissertationen by Author "Al-Yasry, Ahmad Zainy"
Now showing items 1-1 of 1
-
Coverings, Correspondence, and Noncommutative Geometry
Al-Yasry, Ahmad Zainy (2009-01-19)We construct an additive category where objects are embedded graphs in the 3-sphere and morphisms are geometric correspondences given by 3-manifolds realized in different ways as branched covers of the 3-sphere, up to ...