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1.
Quadratic algebras

by Polishchuk, Alexander | Positselski, Leonid.

Series: University Lecture Series ; v. 37Material type: Computer file Computer file; Format: electronic Publication details: Providence, R.I. : American Mathematical Society, c2005Online access: Click here to access online Availability: Items available for reference: Accessible Online (1). : Location(s): .

2.
Two kinds of derived categories, Koszul duality, and comodule-contramodule correspondence

by Positselski, Leonid.

Series: Memoirs of the American Mathematical SocietyMaterial type: Computer file Computer file; Format: electronic Publication details: Providence, R.I. : American Mathematical Society, 2011Online access: Click here to access online Availability: Items available for reference: Accessible Online (1). : Location(s): .