InhaltsangabeOne-Dimensional Magnetism.- Quantum Magnetism in Two Dimensions: From Semi-Classical Néel Order to Magnetic Disorder.- Molecular Magnetism.- Spin Wave Analysis of Heisenberg Magnets in Restricted Geometries.- Simulations of Pure and Doped Low-Dimensional Spin 1/2 Gapped Systems.- Field-Theoretical Methods in Quantum Magnetism.- Many-Body Techniques Applied to Quantum Magnetism.- Integrabiliy of Quantum Chains: Theory and Applications to the Spin 1/2 XXZ Chain. Quantum Phases and Phase Transitions of Mott Insulators.- Spin-Orbit-Topology, a Triptych.