REFERENCES
- Blattner , R.J. , Cohen , M. and Montgomery , S. 1986 . Crossed Products and Inner Actions of Hopf Algebras . Trans. A.M.S. , 298 : 671 – 711 .
- Brzezin´ski , T. 1999 . The Structure of Corings 1 – 24 . Swansea : Univ. Wales . Preprint
- DeMeyer , F. 1966 . The Trace Map and Separable Algebras . Osaka J. Math. , 3 : 7 – 11 .
- Doi , Y. 1985 . Algebras with Total Integrals . Comm. Algebra , 13 : 2137 – 2159 .
- Doi , Y. 1990 . Hopf Extensions and Maschke Type Theorems . Israel J. Math. , 72 : 99 – 108 .
- Doi , Y. and Takeuchi , M. 1986 . Cleft Comodule Algebras for a Bialgebra . Comm. Algebra , 14 : 801 – 818 .
- Elliger , S. 1975 . Über Automorphismen Und Derivationen Von Ringen . J. Reine Ang. Mat. , 277 : 155 – 177 .
- Goodman , F. , de la Harpe , P. and Jones , V.F.R. 1989 . Coxeter Graphs and Towers of Algebras Vol. 14 , Heidelberg , , Germany : Springer Verlag, M.S.R.I. Publ .
- Hirata , K. and Sugano , K. 1966 . On Semisimple Extensions and Separable Extensions Over Non Commutative Rings . J. Math. Soc. Japan , 18 : 360 – 373 .
- Kadison , L. 1996 . The Jones Polynomial and Certain Separable Frobenius Extensions . J. Algebra , 186 : 461 – 475 .
- Kadison , L. New Examples of Frobenius Extensions . A.M.S., University Lecture Series . Vol. 14 , Providence , R.I.
- Kanzaki , T. 1964 . Special Type of Separable Algebra Over Commutative Ring . Proc. Japan Acad. , 40 : 781 – 786 .
- Kasch , F. 1960/1961 . Projektive Frobenius Erweiterungen . Sitzungsber. Heidelberg. Akad. Wiss. Math.-Natur. Kl. , : 89 – 109 .
- Kreimer , H. and Takeuchi , M. 1981 . Hopf Algebras and Galois Extensions of an Algebra . Indiana Univ. Math. J. , 30 : 675 – 692 .
- Masuoka , A. 1990 . Coalgebra Actions on Azumaya Algebras . Tsukuba J. Math. , 14 : 107 – 112 .
- Montgomery , S. Hopf Algebras and Their Actions on Rings . A.M.S., CBMS Regional Conf. Series in Math. Vol. 82 , Providence , R.I.
- Nikshych , D. and Vainerman , L. 2000 . A Characterization of Depth 2 Subfactors of II1 Factors . J. Func. Analysis , 171 : 278 – 307 .
- Pimsner , M. and Popa , S. 1986 . Entropy and Index for Subfactors . Ann. Sci. Ecole Norm. Sup. , 19 ( 3 ) : 57 – 106 .
- Radford , D. 1994 . The Trace Function and Hopf Algebras . J. Algebra , 163 : 583 – 622 .
- Szyman´ski , W. 1994 . Finite Index Subfactors and Hopf Algebra Crossed Products . Proc. Amer. Math. Soc. , 120 ( 2 ) : 519 – 528 .
- Sweedler , M.E. 1975 . The Predual Theorem to the Jacobson-Bourbaki Theorem . Trans. A.M.S. , 213 : 391 – 406 .
- Ulbrich , K.H. 1982 . Galois Erweiterungen Von Nicht-Kommutativen Ringen . Comm. Algebra , 10 : 655 – 672 .
- or an irreducible strongly separable extension with Markov trace [10].