What are the contribution of Jean Buridan to Logic?

Jean Buridan was a significant figure in medieval logic, particularly known for his work on the theory of supposition, which explores how terms relate to their meanings in propositions. He developed the concept of "modal logic," addressing necessity and possibility in arguments, thus laying groundwork for future logical theories. Buridan's contributions also include the idea of the "Buridan's ass" paradox, illustrating a dilemma of choice in decision-making. His work bridged Aristotelian logic with later developments in the Renaissance, influencing both philosophy and the evolution of logic.