An Introduction to Homological Algebra
《An Introduction to Homological Algebra》 · 第 419 页 · A.1.6
A kernel of \(f:B\to C\) is a morphism \(i:A\to B\) with \(fi=0\), universal among morphisms annihilated by \(f\).
An Introduction to Homological Algebra
《An Introduction to Homological Algebra》 · 第 419 页 · A.1.6
A kernel of \(f:B\to C\) is a morphism \(i:A\to B\) with \(fi=0\), universal among morphisms annihilated by \(f\).
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