Hermann Gunther Gramann was one of the 19th century's most remarkable scientists, but many aspects of his life have remained in the dark. This book assembles essential, first-hand information on the Gramann family. It sheds light on the family's struggle for scientific knowledge, progress and education. It puts a face on the protagonists of an exciting development in the history of science. And it highlights the peculiar set of influences which led Hermann Gramann to brilliant insights in mathematics, philology and physics.

This book of sources is meant to complement the biography of Gramann and the proceedings of the 2009 Gramann Bicentennial Conference (Birkhauser 2010). "Roots and Traces" will interest all scholars working on Hermann Gramann and related topics. It offers newly discovered pictures of family members, historical texts documenting life in this exceptional family and an English translation of these previously unpublished papers.

Text in German and English.

On the occasion of the 200th anniversary of the birth of Hermann Grassmann (1809-1877), an interdisciplinary conference was held in Potsdam, Germany, and in Grassmann's hometown Szczecin, Poland. The idea of the conference was to present a multi-faceted picture of Grassmann, and to uncover the complexity of the factors that were responsible for his creativity. The conference demonstrated not only the very influential reception of his work at the turn of the 20th century, but also the unexpected modernity of his ideas, and their continuing development in the 21st century. This book contains 37 papers presented at the conference. They investigate the significance of Grassmann's work for philosophical as well as for scientific and methodological questions, for comparative philology in general and for Indology in particular, for psychology, physiology, religious studies, musicology, didactics, and, last but not least, mathematics. In addition, the book contains numerous illustrations and English translations of original sources, which are published here for the first time. These include life histories of Grassmann (written by his son Justus) and of his brother Robert (written by Robert himself), as well as the paper "On the concept and extent of pure theory of number'' by Justus Grassmann (the father).

Hermann Grassmann, Gymnasiallehrer in Stettin und bekannt als Begrunder der n-dimensionalen Vektoralgebra, erwarb sich auch in der Physik und der Sprachforschung bleibende Verdienste. Gestutzt auf die Dialektik Schleiermachers entwickelte er in seinem Hauptwerk, der Ausdehnungslehre, mit philosophischer Methode eine vollig neue mathematische Disziplin. Zunachst von der Fachwelt abgelehnt, wurde sein Werk Jahrzehnte spater als wegweisend gefeiert. Die Biographie geht dem komplexen Geflecht innerer und ausserer Einflusse nach, innerhalb derer Grassmann sein Schopfertum entfaltete."

On the occasion of the 200th anniversary of the birth of Hermann Grassmann (1809-1877), an interdisciplinary conference was held in Potsdam, Germany, and in Grassmann's hometown Szczecin, Poland. The idea of the conference was to present a multi-faceted picture of Grassmann, and to uncover the complexity of the factors that were responsible for his creativity. The conference demonstrated not only the very influential reception of his work at the turn of the 20th century, but also the unexpected modernity of his ideas, and their continuing development in the 21st century.

This book contains 37 papers presented at the conference. They investigate the significance of Grassmann's work for philosophical as well as for scientific and methodological questions, for comparative philology in general and for Indology in particular, for psychology, physiology, religious studies, musicology, didactics, and, last but not least, mathematics. In addition, the book contains numerous illustrations and English translations of original sources, which are published here for the first time. These include life histories of Grassmann (written by his son Justus) and of his brother Robert (written by Robert himself), as well as the paper "On the concept and extent of pure theory of number'' by Justus Grassmann (the father).<