Essays about: "Liegrupper"

Found 4 essays containing the word Liegrupper.

  1. 1. Spin Representations, Clifford Algebras and Spinors

    University essay from Uppsala universitet/Matematiska institutionen

    Author : Simon Wogel; [2023]
    Keywords : Algebras; Clifford algebras; Spinors; Representations; Lie algebras; Lie groups; Algebror; Cliffordalgebror; Spinorer; Representationer; Liealgebror; Liegrupper;

    Abstract : We begin by giving some theoretical background to the underlying concepts of spin representations and spinors. This is done from the perspective of Lie groups and Lie algebras. In particular, we discuss the functionality of Clifford algebras in the determination of the double-covering spin groups. READ MORE

  2. 2. Invariant Extended Kalman Filter for Measurements on Lie Groups

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Viktor Kull; [2021]
    Keywords : ;

    Abstract : Since its creation, the extended Kalman filter (EKF) has become an industry standard for state estimation. However, the EKF is designed for Euclidean spaces, which causes challenges when adapting it to non-Euclidean spaces such as Lie groups, which includes 3D attitude. READ MORE

  3. 3. Local Rigidity of Some Lie Group Actions

    University essay from KTH/Matematik (Avd.)

    Author : Sven Sandfeldt; [2020]
    Keywords : Mathematics; dynamical systems; smooth dynamical systems; local rigidity; cocycle rigidity; higher rank actions; Nash-Moser inverse function theorem; Matematik; dynamiska system; släta dynamiska system; lokal rigiditet; cocycel rigiditet; högre rank gruppverkan; Nash-Moser inversa funktionssats;

    Abstract : In this paper we study local rigidity of actions of simply connected Lie groups. In particular, we apply the Nash-Moser inverse function theorem to give sufficient conditions for the action of a simply connected Lie group to be locally rigid. Let $G$ be a Lie group, $H < G$ a simply connected subgroup and $\Gamma < G$ a cocompact lattice. READ MORE

  4. 4. Overview of Lie Groups and Their Lie Algebras

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Jonathan Krook; [2020]
    Keywords : ;

    Abstract : Intuitively, Lie groups are groups that are also smooth. The aim of this thesis is to describe how Lie groups are defined as smooth manifolds, and to look into their properties. To each Lie group there exists an associated vector space, which is called the Lie algebra of the Lie group. READ MORE