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
However, the language of Mathematics does not consist of formulas alone. The definitions and terms are verbalized often acquiring a meaning different from the customary one. Many students are inclined to hold this against mathematics. For example, one may wonder whether 0 is a number.