Essays about: "Erik Landin"

Found 2 essays containing the words Erik Landin.

1. 1. The cosmological polytope of the complete bipartite graph K_{2,n}

   University essay from KTH/Matematik (Avd.)

   Author : Erik Landin; [2023]
   Keywords : Polytopes; Cosmological polytopes; Gröbner bases; Graphs; Polytop; Kosmologiska polytop; Gröbner baser; Grafer;

   Abstract : A cosmological polytope of an undirected connected graph is a lattice polytope which when the graph is interpreted as a feynman diagram can be used to calculate the contribution of that feynman diagram to the wavefunction of some cosmological models. This contribution can be calculated using the canonical form of the cosmological polytope, which can be computed by taking the sum of the canonical forms of the facets of a subdivision of the cosmological polytope. READ MORE

3. 2. Gaussian Integers and Other Quadratic Integer Rings

   University essay from KTH/Skolan för teknikvetenskap (SCI)

   Author : Erik Landin; Seif Hussein; [2021]
   Keywords : ;

   Abstract : This thesis deals with quadratic integer rings, in particular the Gaussian integers Z}[i]. Concepts such as quadratic extensions, Euclidean domains and unique factorization domains will be introduced to the reader. READ MORE