群的上同调，《群的上同调》是2009年6月世界图书出版公司出版的图书，作者是（美）布朗（Brown.K.S.）。《群的上同调》讲述了：This book is based on a course given at Cornell University and intendedprimarily for second-year graduate students. The purpose of the course wasto introduce students who knew a little algebra and topology to a subject inwhich there is a very rich interplay 'between the two. Thus I take neither apurely algebraic nor a purely topological approach， but rather I use bothalgebraic and topological techniques as they seem appropriate T