微分几何(英文版) 作者:(加)夏普 著出版时间:2011年版内容简介 This book is a study of an aspect of Elie Cartan's contribution to thequestion "What is geometry?"In the last century two great generalizations of Euclidean geometry ap-peared. The first was the discovery of the non-Euclidean geometries. Thesewere organized into a coherent whole by Felix Klein, who recogn...