### Collections in this community

• #### Master's theses (TN-IMF) [21]

Masteroppgaver i matte og fysikk

### Recent Submissions

• #### En lærers undervisningsarbeid knyttet til elevers arbeid med kontekstbaserte matematikkoppgaver gjennom dialogbasert undervisning på 6.trinn. ﻿

(Masteroppgave/UIS-HF-IGIS/2020;, Master thesis, 2020-06-12)
Dialogbasert undervisning har fått en større plass i forskningen på matematikkundervisning de siste årene, noe som også har påvirket utformingen av den nye læreplanen som iverksettes høsten 2020. I dialogbasert undervisning ...
• #### Statistical Shape Analysis of Brain Structures ﻿

(Masteroppgave/UIS-TN-IMF/2020;, Master thesis, 2020-06)
The purpose of this work is to study structural differences of the left hippocampus between patients with Parkinson's disease (PD) and healthy control group (CG) based on shape models like skeletal representation (s-rep) ...
• #### Introduction to Supersymmetry ﻿

(Masteroppgave/UIS-TN-IMF/2020;, Master thesis, 2020-06)
This thesis covers the mathematical foundations of supersymmetry, and looks at the simplest non-trivial example of supersymmetry in physics, the Wess-Zumino model. On the way we will also explicitly calculate the Poincar´e ...
• #### Analyticity in Several Complex Variables ﻿

(Masteroppgave/UIS-TN-IMF/2020;, Master thesis, 2020)
there are many similarities between complex analysis in several variables and one variable but there are also some important differences between holomorphic functions of a single variable and holomorphic functions of $n$ ...
• #### Stochastic Epidemic Models on Complex Network ﻿

(Masteroppgave/UIS-HF-IMF/2019;, Master thesis, 2020-06-14)
The spread of a virus or the outbreak of an epidemic are natural examples of stochastic processes. Classical mathematical descriptions of such phenomenon include various branching processes such as the SIR (Susceptible-I ...
• #### Handling estimation error in Statistical Process Control with EWMA charts ﻿

(Masteroppgave/UIS-TN-IMF/2020;, Master thesis, 2020-06)
This master thesis studies the process control analysis using control charts. It starts with a detailed presentation of the basic types of control charts, with a special focus on the EWMA control chart. An excessive ...
• #### Involutions of Quadrics ﻿

(Masteroppgave/UIS-TN-IMF/2020;, Master thesis, 2020-07-09)
In the introductory chapter, we will explain brieﬂy what all this work is about. First is worthy to mention that the most included area is algebraic geometry, which of course is a combination of algebra and linear algebra. ...
• #### A mathematical approach to Wick rotations ﻿

(PhD thesis UiS;536, Doctoral thesis, 2020-09)
In this thesis we define Wick-rotations mathematically using pseudo-Riemannian geometry, and relate Wick-rotations to real geometric invariant theory (GIT). We discover some new results concerning the existence of Wick ...
• #### Universal Black Holes ﻿

(Peer reviewed; Journal article, 2020-02)
We prove that a generalized Schwarzschild-like ansatz can be consistently employed to construct d-dimensional static vacuum black hole solutions in any metric theory of gravity for which the Lagrangian is a scalar invariant ...
• #### Quantum dynamical dissociation of quarkonia by wave function decoherence in quark-gluon plasma ﻿

(Peer reviewed; Journal article, 2019-02)
In this study, we investigate the real-time evolution of quarkonium bound states in a quark-gluon plasma in an improved QCD based stochastic potential model. This model describes the quarkonium dynamics in terms of a ...
• #### Quarkonium production in the QGP ﻿

(Peer reviewed; Journal article, 2019-05)
We report on recent theory progress in understanding the production of heavy quarkonium in heavy-ion collisions based on the in-medium heavy-quark potential extracted from lattice QCD simulations. On the one hand, the ...
• #### Nil-Killing vector fields and Kundt structures ﻿

(PhD thesis UiS;529, Doctoral thesis, 2020-06)
This thesis is based on three papers, for which two have been submitted for publication and one is published. A chapter presenting relevant background material is included giving convenient access to preliminary foreknowledge ...
• #### The experimental and theoretical investigation of single-crystal diamond compound refractive lenses (CRLs) ﻿

(PhD theses (TN-IMF);527, Doctoral thesis, 2020-06)
In the field of X-ray optics, compound refractive lenses (usually termed CRLs) function as a focusing device for hard X-rays and they are believed to possess a lot of prominent advantages over other focusing devices, such ...
• #### Tales from Wonderland ﻿

(Doctoral thesis, 2020-06)
Knowing that the Universe is quite isotropic, one may, as already discussed in Chapter 1, wonder how likely such a Universe is. We take the following research question. Question 1. Is the asymptotic future of a cosmology ...
• #### Essays in statistics and econometrics ﻿

(PhD thesis UiS; 523, Doctoral thesis, 2020-05)
Helped by cheaper data computation, companies make more use of sophisticated statistical analysis in decision making and economic management. In the dissertation I evaluate and develop statistical methods and apply them ...
• #### Differential invariants of Kundt waves ﻿

(Peer reviewed; Journal article, 2019-07)
Kundt waves belong to the class of spacetimes which are not distinguished by their scalar curvature invariants. We address the equivalence problem for the metrics in this class via scalar differential invariants with respect ...
• #### EPW Cubes ﻿

(Journal article; Peer reviewed, 2016-08)
We construct a new 20-dimensional family of projective six-dimensional irreducible holomorphic symplectic manifolds. The elements of this family are deformation equivalent with the Hilbert scheme of three points on a K3 ...
• #### Two-flavor chiral perturbation theory at nonzero isospin: Pion condensation at zero temperature ﻿

(Journal article; Peer reviewed, 2019-10)
In this paper, we calculate the equation of state of two-flavor finite isospin chiral perturbation theory at next-to-leading order in the pion-condensed phase at zero temperature. We show that the transition from the vacuum ...
• #### Pion condensation and QCD phase diagram at finite isospin density ﻿

(Journal article; Peer reviewed, 2019-09)
We use the Polyakov-loop extended two-flavor quark-meson model as a low-energy effective model for QCD to study 1) the possibility of inhomogeneous chiral condensates and its competition with a homogeneous pion condensate ...
• #### FCC-ee: The Lepton Collider: Future Circular Collider Conceptual Design Report Volume 2 ﻿

(Journal article; Peer reviewed, 2019-06)
In response to the 2013 Update of the European Strategy for Particle Physics, the Future Circular Collider (FCC) study was launched, as an international collaboration hosted by CERN. This study covers a highest-luminosity ...