Logik und Semantik sind im Mittelalter so eng miteinander verknupft, dass die Trennung beider Gebiete das Verstandnis der Probleme beeintrachtigen wurde. Die spezifische Leistung der mittelalterlichen Logik besteht in der Analyse der semantischen Voraussetzungen der aristotelischen Logik und dem damit verbundenen Versuch, die semantischen Voraussetzungen der naturlichen Sprachen zu untersuchen. Damit haben die mittelalterlichen Logiker eine Arbeit geleistet, die von Aristoteles und lange Zeit auch von der modernen Logik vernachlassigt wurde.

This book traces the development of formal logic from its origins inancient Greece to the present day. The authors first discuss the work oflogicians from Aristotle to Frege, showing how they were influenced by thephilosophical or mathematical ideas of their time. They then examinedevelopments in the present century.

In 1981 I published an article called Early Supposition Theory. Then as now, the magisterial work on the subject was L.M. de Rijk’s Logica Modernorum and then as now any discussion of the topic would have to rely to a great extent on the texts published there. This means that many of the problems that existed then still remain, but a couple of important new studies and several new texts have been published in the meantime, so it may be time (...) to try to take stock of the situation. I will first look at the origin of the term suppositio and then at the chronology of our source texts. (shrink)