Noncommutative analogues of Stein spaces of finite embedding dimension

Ch. 10. P. 135–153.

Пирковский А. Ю.

We introduce and study holomorphically finitely generated (HFG) Fr\'echet algebras, which are analytic counterparts of affine (i.e., finitely generated) C-algebras. Using a theorem of O. Forsterфn. We also show that the class of HFG algebras is stable under some standard constructions. This enables us to give a series of concrete examples of HFG algebras, including Arens-Michael envelopes of affine algebras (such as the algebras of holomorphic functions on the quantum affine space and on the quantum torus), the algebras of holomorphic functions on the free polydisk, on the quantum polydisk, and on the quantum ball. We further concentrate on the algebras of holomorphic functions on the quantum polydisk and on the quantum ball and show that they are isomorphic, in contrast to the classical case. Finally, we interpret our algebras as Fr\'echet algebra deformations of the classical algebras of holomorphic functions on the polydisk and on the ball in C^n.

Ключевые слова: некоммутативная геометрия, алгебра Фреше-Аренса-Майкла, Frechet-Arens-Michael algebra, noncommutative geometry, Stein space, quantum polydisk, quantum ball, пространство Штейна, квантовый полидиск, квантовый шар

В книге

Algebraic Methods in Functional Analysis. The Victor Shulman Anniversary Volume. Operator Theory: Advances and Applications, vol. 233

Basel: Birkhauser/Springer, 2014.