[1] Montgomery S. Hopf Algebras and Their Actions on Rings. Providence, RI: American Mathematical Society, 1993
[2] Sweedler M E. Hopf Algebras. New York: Benjamin, 1969
[3] Kassel C. Quantum Groups. New York: Springer-Verlag, 1995
[4] Montgomery S, Smith S P. Skew derivations and Uq(sl(2)). Israel J of Math, 1990, 72(1/2): 158--166
[5] Wu Z X. Extended quantum enveloping algebra of sl(2). Glasgow Math J, 2009, 51: 441--465
[6] Wu Z X. Extension of a quantized enveloping algebra by a Hopf algebra. Sci China Math (Ser A), 2010, 53(5): 1337--1344
[7] Duplij S, Sinel'shchikov S. Classification of Uq(sl(2))-module algebra structures on the quantum plane. J Math Physics, Analysis, Geometry, 2010, 6: 21--46 |