The very first dedicated, comprehensive companion to medieval logic, covering both the Latin and Arabic sister traditions.

List of contributors; Introduction Catarina Dutilh Novaes and Stephen Read; Part I. Periods and Traditions: 1. The legacy of ancient logic in the Middle Ages Julie Brumberg-Chaumont; 2. Arabic logic up to Avicenna Ahmad Hasnawi and Wilfrid Hodges; 3. Arabic logic after Avicenna Khaled El-Rouayheb; 4. Latin period up to 1200 Ian Wilks; 5. Logic in the Latin thirteenth century Sara L. Uckelman and Henrik Lagerlund; 6. Logic in the Latin West in the fourteenth century Stephen Read; 7. The post-medieval period E. Jennifer Ashworth; Part II. Themes: 8. Logica vetus Margaret Cameron; 9. Supposition and properties of terms Christoph Kann; 10. Propositions: their meaning and truth Laurent Cesalli; 11. Sophisms and insolubles Mikko Yrjönsuuri and Elizabeth Coppock; 12. The syllogism and its transformations Paul Thom; 13. Consequence Gyula Klima; 14. The logic of modality Riccardo Strobino and Paul Thom; 15. Obligationes Catarina Dutilh Novaes and Sara L. Uckelman; Bibliography; Index.