### On the Homotopy Fiber of K(A^oplus) to K(A) for Exact Categories, by Dongyuan Yao

In this paper we identify the homotopy fiber of the map from the K-theory of
the splitting exact subcategory (i.e., with the same underlying category but
only spitting exact sequences are considered as exact sequences) of any exact
category to the k-theory of the exact category. The homotopy fiber is the
K-theory of the category with cofibrations and weak equivalences of certain
chain complexes in the category.

Dongyuan Yao <yao@math.wustl.edu>