Introduction to 3-Manifolds

"Introduction to 3-Manifolds" typically refers to the study of three-dimensional manifolds, which are topological spaces that locally resemble Euclidean 3-dimensional space. In terms of mathematical literature, it may refer to a specific textbook or a course focused on the properties, structures, and classifications of these manifolds. ### Key Concepts: 1. **Manifolds**: A manifold is a topological space that is locally similar to Euclidean space.