**Stacks Project**

by Johan de Jong, et al.

2012**Number of pages**: 3428

**Description**:

An open source textbook on algebraic stacks and the algebraic geometry that is needed to define them. The Stacks Project builds the foundations starting with commutative algebra and proceeding via the theory of schemes and algebraic spaces to a comprehensive foundation for the theory of algebraic stacks.

Download or read it online for free here:

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(16MB, PDF)

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