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Isomorphisms between Artin-Schreier towers
Author(s):
Jean-Marc
Couveignes.
Journal:
Math. Comp.
69
(2000),
1625-1631.
MSC (1991):
Primary 11Y40;
Secondary 12E20
Posted:
April 13, 2000
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Abstract:
We give a method for efficiently computing isomorphisms between towers of Artin-Schreier extensions over a finite field. We find that isomorphisms between towers of degree  over a fixed field  can be computed, composed, and inverted in time essentially linear in  . The method relies on an approximation process.
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Additional Information:
Jean-Marc
Couveignes
Affiliation:
Groupe de Recherche en Mathématiques et Informatique du Mirail, Université de Toulouse II, Le Mirail, France
Email:
couveign@math.u-bordeaux.fr
DOI:
10.1090/S0025-5718-00-01193-5
PII:
S 0025-5718(00)01193-5
Received by editor(s):
February 5, 1997
Received by editor(s) in revised form:
July 24, 1998
Posted:
April 13, 2000
Copyright of article:
Copyright
2000,
American Mathematical Society
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