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Topology of Numbers. This is an undergraduate-level introduction to elementary number theory from a somewhat geometric point of view, focusing on quadratic forms in two variables with integer coefficients. See the webpage for the book for more information or to download an electronic version of the book.
- Algebraic Topology Book
A downloadable textbook in algebraic topology.
- The Download Page
A downloadable textbook in algebraic topology. The plan is...
- Basic 3-Manifold Topology
Chapter 1. Canonical Decomposition 1. Prime Decomposition....
- Webpage for the Book
This is an introduction to elementary number theory from a...
- Pictures of Bianchi Orbifolds
Bianchi Orbifolds. Shown below are pictures of the...
- Photos of Renwick Brook
Renwick Brook . These are pictures of a stream that runs by...
- Algebraic Topology Book
Allen Edward Hatcher (born October 23, 1944) is an American topologist . Biography [ edit] Hatcher was born in Indianapolis, Indiana. [1] . After obtaining his B.S from Oberlin College in 1966, he went for his graduate studies to Stanford University, where he received his Ph.D. in 1971. [1] .
A downloadable textbook in algebraic topology.
Professor Emeritus. Research Focus. Geometric topology. A common thread through much of my research is the idea of studying the space of all topological objects of a certain kind, for example, the space of all finite polyhedra, the space of all diffeomorphisms of a manifold, or the space of all knots.
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Allen Hatcher. Chapter 1. Canonical Decomposition. Prime Decomposition. Torus Decomposition. Chapter 2. Special Classes of 3-Manifolds. Seifert Manifolds. Torus Bundles and Semi-Bundles. Chapter 3. Homotopy Properties. 1. The Loop and Sphere Theorems.
Allen Hatcher. Professor Emeritus. Research Focus. Geometric topology. A common thread through much of my research is the idea of studying the space of all topological objects of a certain kind, for example, the space of all finite polyhedra, the space of all diffeomorphisms of a manifold, or the space of all knots.