TY - BOOK AU - Courant;Richard and Robbins;Herbert. TI - What is Mathematics?: An Elementaty Approach to Ideas and Methods U1 - 510 COU PY - 1953/// CY - London PB - Oxford University Press KW - Mathematics;Maxima and Minima;The Calculus KW - Projective Geometry,Axiomatics,Non-Euclidean Geometries KW - Hypernbolic Non-Euclidean Geometry ER -