Abstract
This chapter reduces the proof of the manifold part of the stable parametrized h-cobordism theorem to a result about spaces of stably framed manifolds. Here Δsuperscript q denotes the standard affine q-simplex. All polyhedra will be compact, and all manifolds considered will be compact PL manifolds. The chapter begins with a discussion of spaces of PL manifolds. It defines a space of manifolds as a simplicial set, with families of manifolds parametrized by Δsuperscript q as the q-simplices. Relevant terms such as tangent microbundle, fiberwise tangent microbundle, stably framed family of manifolds, and space of stably framed n-manifolds are taken into account. The chapter also describes the spaces of thickenings and how to straighten the thickenings.
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