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An introduction to A1 homotopy theory

Fabien Morel

Geometry
Homotopy theory
Algebraic geometry

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Generalized divisors and reflexive sheaves on normal varieties

Karl Schwede

Geometry
Algebraic geometry
Algebra
Commutative algebra

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Category theory notes

Tom Leinster

Algebra
Category theory

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Introduction to lambda calculus

Erik Barendsen, Henk Barendregt

Logic

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Proofs and types

Jean-Yves Girard

Logic

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