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Lifting wreath product extensions
Author(s):
Elena
V.
Black
Journal:
Proc. Amer. Math. Soc.
129
(2001),
1283-1288.
MSC (2000):
Primary 14H30, 14E20, 14D10;
Secondary 12F10, 13B05
Posted:
October 24, 2000
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Abstract:
Let and be finite groups and let be a hilbertian field. We show that if has a generic extension over and satisfies the arithmetic lifting property over , then the wreath product of and also satisfies the arithmetic lifting property over . Moreover, if the orders of and are relatively prime and is abelian, then any extension of by (which is necessarily a semidirect product) has the arithmetic lifting property.
References:
-
- [Bl1]
- E. Black, Deformation of dihedral
-group extensions of fields, Trans. Amer. Math. Soc. 351 (1999), 3229-3241. MR 99m:12004 - [Bl2]
- E. Black, On semidirect products and the arithmetic lifting property, J. London Math. Soc. (2) 60 (1999), 677-688. CMP 2000:11
- [CHR]
- S.U. Chase, D.K. Harrison and A. Rosenberg, Galois theory and Galois cohomology of communitive rings, Mem. Amer. Math. Soc. 52 (1965), 15-33. MR 33:4118
- [MaMa]
- G. Malle and B.H. Matzat, Inverse Galois theory, Springer-Verlag, Berlin-Heidelberg-New York-Tokyo, 1999. CMP 2000:02
- [Sa]
- D. Saltman, Generic Galois Extensions and Problems in Field Theory, Advances in Math 43 (1982), 250-283. MR 84a:13007
- [Se]
- J-P. Serre, Topics in Galois theory, Notes written by Henri Darmon, Jones and Bartlett Publ., Boston, 1992. MR 94d:12006
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Additional Information:
Elena
V.
Black
Affiliation:
Department of Mathematics, University of Oklahoma, Norman, Oklahoma 73019
Email:
eblack@math.ou.edu
DOI:
10.1090/S0002-9939-00-05797-X
PII:
S 0002-9939(00)05797-X
Received by editor(s):
August 9, 1999
Posted:
October 24, 2000
Communicated by:
Michael Stillman
Copyright of article:
Copyright
2000,
American Mathematical Society
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