Heytesbury, William (before 1313–1372/3)

William Heytesbury, an English logician of the mid-fourteenth century, is, with Richard Kilvington, Richard Swineshead, Thomas Bradwardine and John Dumbleton, one of several philosophers known as the Oxford Calculators. In his works, Heytesbury examined mathematical topics related to motion and the continuum as well as paradoxes of self-reference and problems arising from intentional contexts, all within the context of terminist logic, through the resolution of sophismata. He is most noted for developing the mathematics of uniform acceleration, and for his contributions to developing the mathematical treatment of physical qualities such as heat.