James Hume (mathematician) James Hume (mathematician) James Hume (fl. 1639) was a Scottish mathematician. He is given credit for introducing the modern exponential notation, along with René Descartes. The son of David Hume of Godscroft, sometimes therefore called described as "Scotus Theagrius", James Hume lived in France. Theagrius was a pen-name used by his father, and has been thought a macaronic form of "Godscroft". Hume published a Hebrew grammar in Hamburg, in 1624. On the title-page of his "Pantaleonis Vaticinia Satyra", dated Rouen, 1633, Hume is called "Med. Doctor". The "Satyra" is a Latin romance, imitating John Barclay's "Argenis". It is an "elegant
Leo the Mathematician Thucydides. He composed his own medical encyclopaedia. Later Byzantine scholars sometimes confused Leo with the scholar Leo Choirosphaktes and the emperor Leo VI the Wise, and ascribe to him oracles. Leo the Mathematician Leo the Mathematician or the Philosopher ( or ὁ Φιλόσοφος, "Léōn ho Mathēmatikós" or "ho Philósophos"; c. 790 – after 869) was a Byzantine philosopher and logician associated with the Macedonian Renaissance and the end of the Second Byzantine Iconoclasm. His only preserved writings are some notes contained in manuscripts of Plato's dialogues. He has been called a "true Renaissance man" and "the cleverest man in Byzantium