## 83.1 Introduction

In this chapter continues the discussion started in Cohomology of Spaces, Section 68.1. One can also view this chapter as the analogue for algebraic spaces of the chapter on étale cohomology for schemes, see Étale Cohomology, Section 59.1.

In fact, we intend this chapter to be mainly a translation of the results already proved for schemes into the language of algebraic spaces. Some of our results can be found in [Kn].

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