Prof. Dr. Heinrich Saller worked for over 40 years in mathematical physics with a special focus on field theory. His research interests include centrum correlations of the nonabelian internal symmetries isospin and colour with the abelian hypercharge; particle projection of relativistic fields and last but not least timespace as homogenous causal manifolds and their representations. He has worked at Cornell University and at the Ludwigs Maximilan University Munich (LMU). Heinrich Saller's main affiliation is the Max Planck Institute of Physics in Munich. He is editor-in-chief of the International Journal of Theoretical Physics.

“This book is devoted to the symmetry that is one of the basic questions in Physics. … The author uses a comprehensible language to explain very complex phenomena connected with the symmetry. … There exist a lot of examples illustrating the theories. All above mentioned topics are written readably, and at the same time follow the academic frames with some simple proofs and corollaries.” (Dimitar A. Kolev, zbMATH 1381.81007, 2018)

• Introduction and Orientation.- Units and Orders of Magnitude.- How Complex is Nature?.- Plato’s Beautiful Symmetry.- Circles and Winding Numbers.- The Hall of Mirrors.- Telescopes for Symmetries.- Classical and Quantum Logics.- Classical and Quantum Probability.- Free States and Particles.- Operational Position and the Atomic Spectrum.- Operational Spacetime and the Particle Spectrum.

Prof. Dr. Heinrich Saller worked for over 40 years in mathematical physics with a special focus on field theory. His research interests include centrum correlations of the nonabelian internal symmetries isospin and colour with the abelian hypercharge; particle projection of relativistic fields and last but not least timespace as homogenous causal manifolds and their representations. He has worked at Cornell University and at the Ludwigs Maximilan University Munich (LMU). Heinrich Saller's main affiliation is the Max Planck Institute of Physics in Munich. He is editor-in-chief of the International Journal of Theoretical Physics.

“This book is devoted to the symmetry that is one of the basic questions in Physics. … The author uses a comprehensible language to explain very complex phenomena connected with the symmetry. … There exist a lot of examples illustrating the theories. All above mentioned topics are written readably, and at the same time follow the academic frames with some simple proofs and corollaries.” (Dimitar A. Kolev, zbMATH 1381.81007, 2018)

• Introduction and Orientation.- Units and Orders of Magnitude.- How Complex is Nature?.- Plato’s Beautiful Symmetry.- Circles and Winding Numbers.- The Hall of Mirrors.- Telescopes for Symmetries.- Classical and Quantum Logics.- Classical and Quantum Probability.- Free States and Particles.- Operational Position and the Atomic Spectrum.- Operational Spacetime and the Particle Spectrum.