http://hdl.handle.net/123456789/63 2026-04-16T01:26:11Z 2026-04-16T01:26:11Z Ustimenko, Vasyl A. http://hdl.handle.net/123456789/71 2020-01-24T21:25:17Z 2003-08-05T00:00:00Z

On a group theoretical construction of expanding graphs Ustimenko, Vasyl A.

2003-08-05T00:00:00Z Theohari-Apostolidi, Th. Vavatsoulas, H. http://hdl.handle.net/123456789/70 2020-01-24T21:24:56Z 2003-06-26T00:00:00Z

On the separability of the restriction functor Theohari-Apostolidi, Th.; Vavatsoulas, H.

2003-06-26T00:00:00Z Szeto, George Xue, Lianyong http://hdl.handle.net/123456789/69 2020-01-24T21:27:30Z 2003-03-28T00:00:00Z

The commutator Hopf Galois extensions Szeto, George; Xue, Lianyong Let H be a finite dimentional Hopf algebra over a field k and H* the dual Hopf algebra of H. Then a commutator right H*-Galois extension B of BH is characterized in terms of the smash product B#H and some relationships between such a B and the Hopf Galois Azumaya or Hopf Galois Hirata extensions are also given.

2003-03-28T00:00:00Z Pyekhtyeryev, Vasyl http://hdl.handle.net/123456789/68 2020-01-24T21:25:18Z 2003-07-01T00:00:00Z

H− and R−cross-sections of the full finite semigroup Tn Pyekhtyeryev, Vasyl All H− and R− cross-sections of the full finite semigroup Tn of all transformations of the set N = {1, 2, . . . , n} are described.

2003-07-01T00:00:00Z