#### Volume 13, issue 2 (2013)

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A streamlined proof of Goodwillie's $n$–excisive approximation

### Charles Rezk

Algebraic & Geometric Topology 13 (2013) 1049–1051
##### Abstract

We give a shorter proof of Goodwillie’s, [Geom. Topol. 7 (2003) 645–711; Lemma 1.9], which is the key step in proving that the construction ${P}_{n}F$ gives an $n$–excisive functor.

##### Keywords
calculus of functors
Primary: 55P99