Die in diesem Band zusammengefassten Beitr©Þge stellen die wesentlichen Forschungsergebnisse der internationalen M©ơnchner Konferenz "100 Jahre Russell-Paradoxon" im Jahr 2001 dar, auf der an die Entdeckung des ber©ơhmten Russell Paradoxons vor 100 Jahren erinnert wurde. Die 31 Beitr©Þge und der Einf©ơhrungsessay des Herausgebers wurden alle - bis auf zwei Ausnahmen - urspr©ơnglich f©ơr diesen Band verfasst. The papers collected in this volume represent the main body of research arising from the International Munich Centenary Conference in 2001, which commemorated the discovery of the famous Russell Paradox a hundred years ago. The 31 contributions and the introductory essay by the editor were (with two exceptions) all originally written for the volume. The volume serves a twofold purpose, historical and systematic. One focus is on Bertrand Russell's logic and logical philosophy, taking into account the rich sources of the Russell Archives, many of which have become available only recently. The second equally important aim is to present original research in the broad range of foundational studies that draws on both current conceptions and recent technical advances in the above-mentioned fields. The volume contributes therefore, to the well-established body of mathematical philosophy initiated to a large extent by Russell's work.