Quadratic Forms 

• Foundations (notes)

• Introduction to Witt Rings (notes)

• Quaternion Algebras (notes)

• Brower-Wall Group (notes)

• Clifford Algebras (notes)

• Gersten Complex (notes)

• On Milnor K, Milnor Conjecture,  (notes)

       and Gersten Conjecture

• Chow Groups and Chow-Witt Groups (notes)

• Witt Groups and Triangulated Witt Groups (notes)