Algebraic Goodwillie calculus and a cotriple model for the remainder

Details Algebraic Goodwillie calculus and a cotriple model for the remainder Algebraic Goodwillie calculus and a cotriple model for the remainder

Publishing date

2002-12-05

URL

arxiv.org/abs/math/0212095v2

Science

Mathematics

Field

Algebraic Topology

Additional info

27 pages. Incorporates suggestions of referee, especially: more context in intro, proof that we have a cotriple is clarified,

Type

Scientific paper

Abstract

We define an ``algebraic'' version of the Goodwillie tower, P_n^alg F(X), that depends only on the behavior of F on coproducts of X. When F is a functor to connected spaces or grouplike H-spaces, the functor P_n^alg F is the base of a fibration whose fiber is the simplicial space associated to a cotriple built from the (n+1) cross effect of the functor F. When the connectivity of X is large enough (for example, when F is the identity functor and X is connected), the algebraic Goodwillie tower agrees with the ordinary (topological) Goodwillie tower, so this theory gives a way of studying the Goodwillie approximation to a functor F in many interesting cases.

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