Commutative Algebra with a View Toward Algebraic Geometry
《Commutative Algebra with a View Toward Algebraic Geometry》 · 第 452 页 · Chapter 18「Depth, Codimension, and Cohen–Macaulay Rings」
A ring such that $\operatorname{depth}P=\operatorname{codim}P$ for every maximal ideal $P$ of $R$ is called a Cohen–Macaulay ring.