By Professor Dr. Paul Urban (auth.)
These lectures signify a condensation of a couple of colloquia, seminars and discussions held on the Institute of Theoretical Physics of the collage of Graz over the last years and epitomize the valuable traces of analysis undertaken through my crew. From the very starting of my appointment on the collage of Graz in 1947 i've been interested in the duty of mentioning a comparatively small team of scientifically and open-minded co-workers and of stimulating them to sound clinical examine. due to the fact that 1930 i personally have handled matters of the sort handled in those lectures, to which i used to be brought through my overdue buddy and instructor TH. SEXL. but additionally as assistant and co-worker of E. FUES and R. THIRRING I usually labored on those difficulties, continually utilizing new equipment and features of process. over the last years of the battle and the 1st ones afterwards Ihad the lucky chance to obtain many stimulating rules and reviews on my paintings from A. SOMMERFELD at the get together of my widespread visits to Munich. in particular this final interval, even supposing in part hooked up with own problems and issues of many types stemming from the turbulence of lost-war readjustments, I deliberate to be the most important instances in my life.