This is the home page of the stacks project. It is an open source textbook and
reference work on algebraic stacks and the algebraic geometry needed to define
them. For more general information click here.

The stacks project is a collaborative effort. Click here for a list of contributors.
If you would like to know how to participate click here.
To informally comment on the stacks project visit the blog.

You can download the entire project in one file here: pdf | dvi
To browse the project one chapter at a time click here.
For other downloads (eg tex files) click here.

We explain how to reference results in the stacks project here.
To search for location and latex code corresponding to a tag click here.

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For the last 50 log entries click here.
In order to browse the complete history click here.

This project is licensed under the GNU Free Documentation License, see here.