Abstract
AbstractThe algebras obtained as fixed points of the action of the cyclic group ℤN on the coordinate algebra of the quantum disc are studied. These can be understood as coordinate algebras of quantum or non‐commutative cones. The following observations are made. First, contrary to the classical situation, the actions of ℤN are free and the resulting algebras are homologically smooth. Second, the quantum cone algebras admit differential calculi that have all the characteristics of calculi on smooth complex curves. Third, the corresponding volume forms are exact, indicating that the constructed algebras describe manifolds with boundaries.
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