Spaces of PL Manifolds and Categories of Simple Maps
Waldhausen, Friedhelm; Jahren, Bjorn; Rognes, John
ISBN 10: 0691157758 ISBN 13: 9780691157757
Published by Princeton University Press, 2013
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Since its introduction by Friedhelm Waldhausen in the 1970s, the algebraic K-theory of spaces has been recognized as the main tool for studying parametrized phenomena in the theory of manifolds. However, a full proof of the equivalence relating the two areas has not appeared until now. This book presents such a proof, essentially completing Waldhausen's program from more than thirty years ago.
The main result is a stable parametrized h-cobordism theorem, derived from a homotopy equivalence between a space of PL h-cobordisms on a space X and the classifying space of a category of simple maps of spaces having X as deformation retract. The smooth and topological results then follow by smoothing and triangulation theory.
The proof has two main parts. The essence of the first part is a "desingularization," improving arbitrary finite simplicial sets to polyhedra. The second part compares polyhedra with PL manifolds by a thickening procedure. Many of the techniques and results developed should be useful in other connections.
About the Author: Friedhelm Waldhausen is professor emeritus of mathematics at Bielefeld University. Bjørn Jahren is professor of mathematics at the University of Oslo. John Rognes is professor of mathematics at the University of Oslo.
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Bibliographic Details
Title: Spaces of PL Manifolds and Categories of ...
Publisher: Princeton University Press
Publication Date: 2013
Binding: Hardcover
Condition: New