Quantum groups have been investigated rather deeply in mathematical physics over the last decade. Among the most prominent contributions in this area let us mention the works of V.G. Drinfeld, S.L. Woronowicz, S. Majid. Prob ability the- ory on quantum groups has developed in several directions (see works of P. Biane, RL. Hudson and K.R Partasarathy, P.A. Meyer, M. Schurmann, D. Voiculescu). The aim of this book is to present several new aspects related to quantum groups: operator calculus, dual representations, stochastic processes and diffusions, Appell polynomials and systems in connection with evolution equations. Much of the ma- terial is scattered throughout available literature, however, we have nowhere found in accessible form all of this material collected. The presentation of representation theory in connection with Appell systems is original with the authors. Stochastic processes (example: Brownian motion, diffusion processes, Levy processes) are in- vestigated and several examples are presented. As a text the work is intended to be accessible to graduate students and researchers not specialised in quantum prob ability. We would like to acknowledge our colleagues P. Feinsilver, R Lenzceswki, D.

Quantum groups have been investigated rather deeply in mathematical physics over the last decade. Among the most prominent contributions in this area let us mention the works of V.G. Drinfeld, S.L. Woronowicz, S. Majid. Prob ability the- ory on quantum groups has developed in several directions (see works of P. Biane, RL. Hudson and K.R Partasarathy, P.A. Meyer, M. Schurmann, D. Voiculescu). The aim of this book is to present several new aspects related to quantum groups: operator calculus, dual representations, stochastic processes and diffusions, Appell polynomials and systems in connection with evolution equations. Much of the ma- terial is scattered throughout available literature, however, we have nowhere found in accessible form all of this material collected. The presentation of representation theory in connection with Appell systems is original with the authors. Stochastic processes (example: Brownian motion, diffusion processes, Levy processes) are in- vestigated and several examples are presented. As a text the work is intended to be accessible to graduate students and researchers not specialised in quantum prob ability. We would like to acknowledge our colleagues P. Feinsilver, R Lenzceswki, D.

Die Praktischen AErzte und die Allgemeinarzte stellen die weitaus groesste arztliche Berufsgruppe. Ihre Tatigkeit unterscheidet sich in vielem von der des Arztes im Krankenhaus. Die besonderen Auf gaben und Probleme in der Allgemeinpraxis sind in den Banden "Die Allgemeinpraxis" und "Hausarztliche Versorgung" von 21 Kollegen, groesstenteils Praktischen AErzten, beschrieben worden. Bislang fehlte sowohl im deutschen als auch im englischen Schrift tum eine zusammenfassende Darstellung der Tatigkeit des All gemeinarztes. Die "Taschenbucher Allgemeinmedizin" wenden sich vor allem an die jungen Kollegen, die die Absicht haben, Allgemeinarzte zu werden. Die alteren Kollegen in der Bundesrepublik Deutschland, die im Rahmen der Pflichtfamulatur einen Famulus betreuen, koennen die Bande als Lehrhilfe benutzen. Ich danke allen Kollegen, welche uns durch ihre Beitrage unter stutzten, und dem Springer-Verlag fur die ubersichtliche Gestal tung der Texte. Munchen, Sommer 1974 Paul Brandlmeier V Inhalt Vorwort .... V Zeichenerklarung XIV V erzeichBis der Mitarbeiter XV Helmut Pi/lau Hausbesuche, Probleme und Statistik 1 Der Hausbesuch als Informationsquelle . 1 Haufigkeit der Hausbesuche . . . 2 Der Zeitaufwand pro Hausbesuch 2 Umfang der Hausbesuchstatigkeit 3 Helmut Pillau 5 Hausbesuche in der Grossstadt 5 Vorbereitung .