An Introduction to Homological Algebra
《An Introduction to Homological Algebra》 · 第 17 页 · Definition 1.4.3
If \(f=ds+sd\), the maps \(s_n:C_n\to D_{n+1}\) are called a chain contraction of \(f\).
An Introduction to Homological Algebra
《An Introduction to Homological Algebra》 · 第 17 页 · Definition 1.4.3
If \(f=ds+sd\), the maps \(s_n:C_n\to D_{n+1}\) are called a chain contraction of \(f\).
已有 0 人核验