Lord [name and surname] is the honorific for the younger sons of dukes and marquesses (firstborn sons commonly use a courtesy title, one of their fathers' more junior titles; the children of earls and peers below that rank use the honorific The Honourable).
Etymology. Greek mathematician Pythagoras (c.570-c.495 BC), who did something mathematical. The word mathematics comes from the Greek Î¼Î¬Î¸Î·Î¼Î± (mathÄma), mÃ¡thÄma which means in Ancient greek what one, learns what one gets to, know hence also study and, science and in Modern greek just. lesson
mathematics. n. 1. (Mathematics) (functioning as singular) a group of related sciences, including algebra, geometry, and calculus, concerned with the study of number, quantity, shape, and space and their interrelationships by using a specialized notation.