Publications Meetings The Profession Membership Programs Math Samplings Policy & Advocacy In the News About the AMS
|
   
Mobile Device Pairing
Mathematics of Computation
Mathematics of Computation
ISSN 1088-6842(e) ISSN 0025-5718(p)

     

Computing all power integral bases in orders of totally real cyclic sextic number fields

Author(s): István Gaál.
Journal: Math. Comp. 65 (1996), 801-822.
MSC (1991): Primary 11Y50; Secondary 11Y40, 11D57
MathSciNet review: 1333313
Retrieve article in: PDF
This article is available free of charge

Abstract | References | Similar articles | Additional information

Abstract: An algorithm is given for determining all power integral bases in orders of totally real cyclic sextic number fields. The orders considered are in most cases the maximal orders of the fields. The corresponding index form equation is reduced to a relative Thue equation of degree 3 over the quadratic subfield and to some inhomogeneous Thue equations of degree 3 over the rationals. At the end of the paper, numerical examples are given.


References:

1.
A. Baker and H. Davenport, The equations $3x^{2}-2=y^{2}$ and $8x^{2}-7=z^{2}$, Quart. J. Math. Oxford 20 (1969), 129--137. MR 40:1333

2.
A.M. Bergé, J. Martinet and M. Olivier, The computation of sextic fields with a quadratic subfield, Math. Comp. 54 (1990), 869--884. MR 90k:11169

3.
J. Blass, A.M.W. Glass, D.K. Manski, D.B. Meronk and R.P. Steiner, Constants for lower bounds for linear forms in the logarithms of algebraic numbers II: The homogeneous rational case, Acta Arith. 55 (1990), 15--22. MR 91h:11064

4.
J. Blass, A.M.W. Glass, D.K. Manski, D.B. Meronk and R.P. Steiner, Corrigendum to the paper: Constants for lower bounds for linear forms in the logarithms of algebraic numbers II: The homogeneous rational case, Acta Arith. 65 (1993), p. 383. MR 95d:11093

5.
W.J. Ellison, Recipes for solving diophantine problems by Baker's method, Sém. Theorie des Nombres (1970--1971), exp. no. 11. MR 52:10591

6.
V. Ennola, S. Mäki and R. Turunen, On real cyclic sextic fields, Math. Comp. 45 (1985), 591--611. MR 86m:11084

7.
J.H. Evertse, K. Gy\H{o}ry, C.L. Stewart and R. Tijdeman, S--unit equations and their applications, New Advances in Transcendence Theory, ed. by A.Baker, Cambridge University Press, 1988, pp. (110--174). MR 89j:11028

8.
U. Fincke and M. Pohst, A procedure for determining algebraic integers of given norm, EUROCAL 83, Lecture Notes in Computer Science, No. 162, Springer Verlag, New York, 1983, pp. (194--202). MR 86k:11078

9.
I. Gaál, On the resolution of inhomogeneous norm form equations in two dominating variables, Math. Comp. 51 (1988), 359--373. MR 89m:11030

10.
I. Gaál, A. Peth\H{o} and M. Pohst, On the resolution of index form equations in biquadratic number fields, I, J. Number Theory 38 (1991), 18--34. MR 92g:11031

11.
I. Gaál, A. Peth\H{o} and M. Pohst, On the resolution of index form equations in biquadratic number fields, II, J. Number Theory 38 (1991), 35--51. MR 92g:11031

12.
I. Gaál, A. Peth\H{o} and M. Pohst, On the resolution of index form equations in biquadratic number fields, III. The bicyclic biquadratic case, J. Number Theory 53 (1995), 100--114.

13.
I. Gaál, A. Peth\H{o} and M. Pohst, On the resolution of index form equations in dihedral number fields, J. Experimental Math. 3 (1994), 245--254.

14.
I. Gaál, A. Peth\H{o} and M. Pohst, On the resolution of index form equations, Proc. of the 1991 International Symposium on Symbolic and Algebraic Computation, ed. by Stephen M. Watt, ACM Press, 1991, pp. (185-186).

15.
I. Gaál, A. Peth\H{o} and M. Pohst, On the resolution of index form equations in quartic number fields, J. Symbolic Comp. 16 (1993), 563--584. MR 95f:11109

16.
I. Gaál, A. Peth\H{o} and M. Pohst, Simultaneous representation of integers by a pair of ternary quadratic forms -- with an application to index form equations in quartic number fields, to appear, J. Number Theory.

17.
I. Gaál and N. Schulte, Computing all power integral bases of cubic number fields, Math. Comp. 53 (1989), 689--696. MR 90b:11108

18.
K. Gy\H{o}ry, Sur les polynomes a coefficients entiers et de discriminant donné, III, Publ. Math.(Debrecen) 23 (1976), 141--165. MR 55:10419c

19.
A.K. Lenstra, H.W. Lenstra, Jr. and L. Lovász, Factoring polynomials with rational coefficients, Math. Ann. 261 (1982), 515--534. MR 84a:12002

20.
S. Mäki, The Determination of Units in Real Cyclic Sextic Fields, Lecture Notes in Mathematics, vol. 797, Springer Verlag, Berlin--Heidelberg--New York, 1980. MR 82a:12004

21.
I. Niven and H.S. Zuckerman, An introduction to the Theory of Numbers, J. Wiley and Sons, New York, 1980. MR 81g:10001

22.
M. Pohst, Computational Algebraic Number Theory, DMV Seminar, Band 21, Birkhäuser Verlag, Basel -- Boston -- Berlin, 1993. MR 94j:11132

23.
M. Olivier, Corps sextiques contenant un corps quadratique (I), Séminaire de Théorie des Nombres Bordeaux 1 (1989), 205--250. MR 91g:11122

24.
M. Olivier, Corps sextiques contenant un corps quadratique (II), Séminaire de Théorie des Nombres Bordeaux 2 (1990), 49--102. MR 91g:11123

25.
M. Pohst and H. Zassenhaus, Algorithmic Algebraic Number Theory, Cambridge University Press, 1989. MR 92b:11074

26.
W.M. Schmidt, Diophantine Approximations, Springer Lecture Notes in Mathematics, No. 785, Springer Verlag, Berlin--Heidelberg--New York, 1980. MR 81j:10038

27.
V.G. Sprindzuk, Representation of numbers by the norm forms with two dominating variables, J. Number Theory 6 (1974), 481--486. MR 50:7045

28.
N. Tzanakis and B.M.M. de Weger, On the practical solution of the Thue equation, J. Number Theory 31 (1989), 99--132. MR 90c:11018

29.
N. Tzanakis and B.M.M. de Weger, How to explicitly solve a Thue--Mahler equation, Compositio Math. 84 (1992), 223--288. MR 93k:11025

30.
B.M.M. de Weger, Algorithms for Diophantine Equations, CWI Tract 65, Amsterdam, 1989. MR 90m:11205

31.
B.M.M. de Weger, A Thue equation with quadratic integers as variables, Math. Comp. 64 (1995), 855--861. MR 95f:11020


Similar Articles:

Retrieve articles in Mathematics of Computation with MSC (1991): 11Y50, 11Y40, 11D57

Retrieve articles in all Journals with MSC (1991): 11Y50, 11Y40, 11D57


Additional Information:

István Gaál
Affiliation: Kossuth Lajos University, Mathematical Institute, H--4010 Debrecen Pf.12., Hungary
Email: igaal@math.klte.hu

DOI: 10.1090/S0025-5718-96-00708-9
PII: S 0025-5718(96)00708-9
Keywords: Cyclic sextic number fields, index form equation, power bases
Received by editor(s): May 2, 1994
Received by editor(s) in revised form: March 7, 1995
Additional Notes: This work was begun during the author's stay in Düsseldorf as a fellow of the Alexander von Humboldt Foundation and completed under the partial support of the Hungarian National Foundation for Scientific research Grant no. 1641/91.
Copyright of article: Copyright 1996, American Mathematical Society




AMS and Social Media LinkedIn Facebook Podcasts Twitter YouTube RSS Feeds Blogs Wikipedia