Anti-jamming of GPS receiver is an important problem, navigation war, and this topic has been well researched recently. However, anti-jamming in the complex receiving environment has not been considered in the most of the researches. To solve this pr

编年整理 (2+1)-dimensional anti-de Sitter space 论文集。曾经作为 toy model 的 2+1 维的 de Sitter space，今天在 CTC 和构造上发挥作用。