Bachelor Thesis from the year 2011 in the subject Mathematics - Miscellaneous, printed single-sided, grade: 1,0, Technical University of Munich, language: English, abstract: This thesis is motivated by questions arising in the eld of Mathematical Quantum Electrodynamics, the attempt of a proper mathematical description of Quantum Electrodynamics (QED). QED is the relativistic quantum eld theory of electrodynamics, which uni es Quantum Mechanics and Special Relativity in a consistent manner. From the mathematical point of view, QED is an abelian gauge theory with the symmetry group U(1) (phase...