Sigi Dijkstra, head of the Redanian secret service, was confirmed to appear in The Witcher season 2. Here’s everything you need to know about him.

How an early 20th-century psychologist fooled brains Much of Dijkstra’s work is inspired by the groundbreaking psychologist Mary Cheves West Perky.

Project Scheduling in And-Or Graphs: A Generalization of Dijkstra's Algorithm George M. Adelson-Velsky and Eugene Levner Mathematics of Operations Research , pp. 504-517 (14 pages) ...