About The Book
Higher Topos Theory is a mathematical book by American mathematician Jacob Lurie. The main subject of the book is an ∞-topos. But it also develops the theory of ∞-category as a particular kind of a simplicial set. All together the book provides a categorical foundation for derived algebraic geometry. The book is available at although the copy hosted on Lurie’s website has been updated more recently. Since 2018 Lurie has been porting the content of HTT over to a Stacks Project-like web platform, Kerodon, and adding new material.
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