Sökning: "Hans Lundmark"
Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Hans Lundmark.
Sammanfattning : We study second order ordinary differential equations of Newton type with integrals of motion that depend quadratically on the velocity. In particular, we introduce the class of cofactor pair systems, which admit two quadratic integrals of motion of a special form. LÄS MER
Sammanfattning : This thesis investigates the interdependence of religiosity and a life situation changed by cancer, focusing especially on the coping process. This implies analyses of a number of identified expressions of religiosity regarding prerequisites and functions in the coping process. LÄS MER
Sammanfattning : The aim of this work is to present some new contributions to the theory of peaked solitons. The thesis contains two papers, named "Lie symmetry analysis of the Novikov and Geng-Xue equations, and new peakon-like unbounded solutions to the Camassa-Holm, Degasperis-Procesi and Novikov equations'' and "Peakon-antipeakon solutions of the Novikov equation'' respectively. LÄS MER
Sammanfattning : The aim of this work is to present new contributions to the theory of peaked solitons. The thesis consists of two papers,which are named “Newsolutionswith peakon creation in the Camassa–HolmandNovikov equations” and “Peakon-antipeakon solutions of the Novikov equation” respectively. LÄS MER
Sammanfattning : The Tippe Top is a toy that has the form of a truncated sphere with a small peg. When spun on its spherical part on a flat supporting surface it will start to turn upside down to spin on its peg. LÄS MER