非線形問題と複素幾何学
《非線形問題と複素幾何学》 · 第 249 页 · Chapter 10「Zero-Density Estimates」，Section 10.1
Therefore, we should ask how many zeros can possibly be in a given region, and our estimates should reveal that the further the region is from the critical line, the smaller the number of zeros it contains. A quantitative statement of this kind is called a zero-density theorem.