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Tag Archives: Poincare duality
The Poincare conjecture
The next few sections of Chapter 1 are intended to introduce some key examples of constructions with manifolds: The highdimensional Poincaré conjecture and the hcobordism theorem Milnor’s exotic spheres Variation of Pontrjagin classes within a homotopy type In the version … Continue reading
Posted in Discussion, math
Tagged cobordism, exotic sphere, Poincare conjecture, Poincare duality
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What Surgery Is About: Manifolds
Now I’ll begin to post material from the book proper. Here is the first section of Chapter I. I’m going to try to post stuff in bitesize pieces like this, rather than a whole chapter at a time. Of course, … Continue reading