Marc Rieffel
Born
Marc Rieffel

(1937-12-22) December 22, 1937
New York City, New York, United States
NationalityAmerican
Alma materColumbia University
Known forNoncommutative torus
Scientific career
FieldsC*-algebras
Quantum group theory
Noncommutative geometry
InstitutionsUniversity of California, Berkeley
Doctoral advisorRichard Kadison
Doctoral studentsPhilip Green
Jonathan Rosenberg

Marc Aristide Rieffel is a mathematician noted for his fundamental contributions to C*-algebra[1] and quantum group theory.[2] He is currently a professor in the department of mathematics at the University of California, Berkeley.

In 2012, he was selected as one of the inaugural fellows of the American Mathematical Society.[3]

Contributions

Rieffel earned his doctorate from Columbia University in 1963 under Richard Kadison with a dissertation entitled A Characterization of Commutative Group Algebras and Measure Algebras.

Rieffel introduced Morita equivalence as a fundamental notion in noncommutative geometry and as a tool for classifying C*-algebras.[1] For example, in 1981 he showed that if Aθ denotes the noncommutative torus of angle θ, then Aθ and Aη are Morita equivalent if and only if θ and η lie in the same orbit of the action of SL(2, Z) on R by fractional linear transformations.[4] More recently, Rieffel has introduced a noncommutative analogue of Gromov-Hausdorff convergence for compact metric spaces which is motivated by applications to string theory.[5]

References

  1. 1 2 G Cortinas (2008) K-theory and Noncommutative Geometry, European Mathematical Society.
  2. ↑ Symmetry, Integrability and Geometry: Methods and Applications (2014) vol 10; Special Issue on Noncommutative Geometry and Quantum Groups in honor of Marc A. Rieffel.
  3. ↑ List of Fellows of the American Mathematical Society, retrieved 2014-03-17.
  4. ↑ Rieffel, Marc A. (1981). "C*-Algebras Associated with Irrational Rotations" (PDF). Pacific Journal of Mathematics. 93 (2): 415–429 [416]. doi:10.2140/pjm.1981.93.415. Retrieved 28 February 2013.
  5. ↑ Rieffel, Marc A. (2004). "Gromov-Hausdorff Distance for Quantum Metric Spaces/Matrix Algebras Converge to the Sphere for Quantum Gromov-Hausdorff Distance" (PDF). Memoirs of the American Mathematical Society. doi:10.1090/memo/0796. S2CID 10059366. Retrieved 17 December 2019.
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