homotopy classification problem

例句：

1. 1. The homotopy classificationproblem is a fundamental issue in topology.
   同胚分类问题是拓扑学中的一个基本问题。
2. 2. This research aims to solve the homotopy classification problem for complex networks.
   这项研究旨在解决复杂网络的同胚分类问题。
3. 3. The homotopy classification problem hasbeen a topic of interest in computer sciencefor many years.
   同胚分类问题一直是计算机科学中多年关注的主题。