- M. Susan Montgomery
M. Susan Montgomery

MAILING ADDRESS: 3620 Vermont Ave, KAP 104
Los Angeles, California 90089-2532
PHONE: (213) 740-2419
FAX: (213) 740-2424
EMAIL: smontgom@usc.edu


Native of Lansing, Michigan
Married, three stepsons; three nieces, one nephew, five great-nieces and nephews

Research Interests

My current research interests concern Hopf algebras and their representations.


University of Michigan, B.A. (with highest honors) 1965
University of Chicago, S.M. 1966, Ph.D. 1969


DePaul University, Chicago: Assistant Professor 1969-70
University of Southern California:

Assistant Professor 1970-75
Associate Professor 1975-82
Professor 1982-present


  1. Selected Papers on Algebra (co-chair of editorial committee), Raymond W. Brink Selected Mathematical Papers, vol 3, Mathematical Association of America, Washington DC, 1977.
  2. Fixed Rings of Finite Automorphism Groups of Associative Rings , Lecture Notes in Math 818, Springer-Verlag, New York, 1980.
  3. Group Actions on Rings (editor), Proceedings of Joint Summer Research Conference, AMS Contemporary Math, vol 43, AMS 1985.
  4. Non-Commutative Rings (co-editor with L. W. Small), MSRI Publications, vol 24, Springer-Verlag, 1992.
  5. Advances in Hopf Algebras (co-editor with Jeffrey Bergen), Lecture Notes in Pure and Applied Math 158, Marcel Dekker, 1994.
  6. Hopf Algebras and Their Actions on Rings, CBMS Lecture Notes vol 82, American Math Society, Providence, RI, 1993 (238 pages).
  7. New Directions in Hopf Algebras (co-editor with H.-J. Schneider), MSRI Publications, vol. 43, Cambridge University Press, 2002.

Papers (since 2000)

  1. A Frobenius-Schur theorem for Hopf algebras (with V. Linchenko), J. of Algebras and Representation Theory 3 (2000), 347-355.
  2. Bicharacters, twistings, and Scheunert's theorem for Hopf algebras (with Yu. Bahturin and D. Fischman), J. of Algebra 236 (2001), 246-276.
  3. Skew-derivations of finite-dimensional algebras and actions of the double of the Taft Hopf algebra (with H.-J. Schneider), Tsukuba J. of Math 25 (2001), 337-358.
  4. Representation theory of finite-dimensional semisimple Hopf algebras, Algebra - Representation Theory (Constanta, 2000), K. W. Roggenkamp and M. Stefanescu, editors, NATO Sci. Ser. II Math. Phys. Chem. 28, Kluwer, Dordrecht, 2001, 189-218.
  5. Polycharacters of cocommutative Hopf algebras (with Yu. Bahturin and M. Kochetov), Canadian Math Bulletin 45 (2002), 11-24.
  6. Computing the Frobenius-Schur indicator for abelian extensions of Hopf algebras (with Y. Kashina and G. Mason), J. of Algebra 251 (2002), 888-913.
  7. Generalized Lie solvability of associative algebras (with Yu. Bahturin and M. Zaicev), Groups, Rings, Lie, and Hopf Algebras , Yu. Bahturin, editor, Proceedings of the 2001 St. John's conference, Kluwer, 2003, 1-23.
  8. Algebra properties invariant under twisting, Hopf algebras in Non-commutative Geometry and Physics, S. Caenepeel and F. Van Oystaeyen, editors, Lecture Notes in Pure and Applied Math, vol 239, Marcel Dekker, 2005, 61-75.
  9. Krull relations in Hopf Galois extensions: lifting and twisting (with H._J. Schneider), Journal of Algebra 288 (2005), 364-383.
  10. Stable Jacobson radicals and semiprime smash products (with V. Linchenko and L. W. Small), Bulletin London Math Society 37 (2005), 860-872.
  11. Primitive ideals and Jacobson radicals in Hopf Galois extensions, Proceedings of the XV Coloquio Latinoamericano de Algebra, AMS Contemporary Math 376, 2005, 333-344.
  12. Hopf powers and orders for some bismash products (with R. Landers and P. Schauenburg), Journal of Pure and Applied Algebra 205 (2006), 156-188.
  13. Semiprime smash products and H-stable prime radicals for PI- algebras (with V. Linchenko), AMS Proceedings 135 (2007), 3091-3108.
  14. Frobenius-Schur indicators for subgroups and the Drinfel'd double of Weyl groups (with R. M. Guralnick), AMS Transactions 361 (2009), 3611-3632.
  15. Representations of some Hopf algebras associated to the symmetric group S_n (with A. Jedwab), Algebras and Representation Theory 12 (2009), 1-17.
  16. Group gradings on simple Lie algebras in finite characteristic (with Yu. Bahturin and M. Kochetov), AMS Proceedings 137 (2009), 1245-1254.
  17. Hopf Galois theory: a survey, in New Topological Contexts for Galois Theory and Algebraic Geometry (A. Baker and B. Richter, editors), Geometry and Topology Monographs 16 (2009), 367-400.
  18. On the trace of the antipode and higher indicators (with Yevgenia Kashina and Siu-Hung Ng), Israel J. Math, 188 (2012), 57-90. (arXiv:0910.1628)
  19. A q-identity related to a comodule (with Andrea jedwab), Communications in Algebra, 39 (2011), 4669-4678.
  20. Modular representations and indicators for bismash products (with Andrea Jedwab), Journal of Algebra 377 (2013), 281-297.
  21. FSZ-groups and Frobenius-Schur indicators of quantum doubles (with M. Iovanov and G. Mason), Math Research Letters 21 (2014), 757-779.
  22. Hopf automorphisms and twisted extensions (with M. Vega and S. Witherspoon), submitted.