Research output: Contribution to journal › Journal article
|<mark>Journal publication date</mark>||01/1999|
|<mark>Journal</mark>||Letters in Mathematical Physics|
|Number of pages||13|
A 'Wick rotation' is applied to a noncommutative sphere to produce a noncommutative version of the hyperboloids. A harmonic basis of the associated algebra is given. A method of constructing noncommutative analogues of surfaces of rotation, examples of which include the paraboloid and the q-deformed sphere, is given. Also given are mappings between noncommutative surfaces, stereographic projections to the complex plane and unitary representations. A relationship with one-dimensional crystals is highlighted.