The algebraic theory of quadratic forms The algebraic and geometric theory of quadratic forms The algebraic and geometric theory of quadratic forms = Tame algebras and integral quadratic forms / the Management theory of Public Goods The algebraic and geometric theory of quadratic forms =: 二次型的代数和几何理论 / Algebraic theory of numbers / Arithmetic of quadratic forms / Algebraic theory of generalized inverses Algebraic theory of semigroups /