Abstract
Suppose that an algebraic number β of degree d = n(n − 1) over ℚ is expressible by the difference of two conjugate algebraic integers α1 ≠ α2 of degree n, namely, β = α1− α2. We prove that then there exists a constant c > 1, which depends on \( \overline{\mid \alpha \mid } \) = max1≤i≤n ∣αi∣ only, such that M(β)1/d > c.
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F. Amoroso, Mahler measure on Galois extensions, Int. J. Number Theory, 14(6):1605–1617, 2018.
F. Amoroso and R.A. Dvornicich, A lower bound for the height in Abelian extensions, J. Number Theory, 80(2):260–272, 2000.
F. Amoroso and D. Masser, Lower bounds for the heights in Galois extensions, Bull. Lond. Math. Soc., 48(6):1008–1012, 2016.
F. Amoroso, I. Pritsker, C. Smyth, and J. Vaaler, Appendix to report on BIRS workshop 15w5054 on the geometry, algebra and analysis of algebraic numbers: Problems proposed by participants, available from: http://www.birs.ca/workshops/2015/15w5054/report15w5054.pdf.
G. Baron, M. Drmota, and M. Skałba, Polynomial relations between polynomial roots, J. Algebra, 177(3):827–846, 1995.
E. Bombieri and W. Gubler, Heights in Diophantine Geometry, New Math. Monogr, Vol. 4, Cambridge Univ. Press, Cambridge, 2006.
A. Dubickas, On the average difference between two conjugates of an algebraic number, Lith. Math. J., 35(4):328–332, 1995.
A. Dubickas, On numbers which are differences of two conjugates of an algebraic integer, Bull. Aust. Math. Soc., 65(3):439–447, 2002.
A. Dubickas, Additive Hilbert’s theorem 90 in the ring of algebraic integers, Indag. Math., New Ser., 17(1):31–36, 2006.
A. Dubickas and C.J. Smyth, Variations on the theme of Hilbert’s theorem 90, Glasg. Math. J., 44(3):435–441, 2002.
G. Höhn and N.P. Skoruppa, Un résultat de Schinzel, J. Théorie Nombres Bordeaux, 5(1):185, 1993.
M. Langevin, Calculs explicites de constantes de Lehmer, in Groupe de Travail en Théorie Analytique et Élémentaire des Nombres, 1986–1987, Publ. Math. Orsay, Vol. 88-01, Orsay, 1988, pp. 52–68.
D.H. Lehmer, Factorization of certain cyclotomic functions, Ann. Math. (2), 34(3):461–479, 1933.
M. Mignotte, Sur un théorème de M. Langevin, Acta Arith., 54(1):81–86, 1989.
A. Schinzel, On the product of the conjugates outside the unit circle of an algebraic number, Acta Arith., 24:385–399, 1973. Addendum, Acta Arith., 26:329–331, 1974–1975.
C. Smyth, The Mahler measure of algebraic numbers: A survey, in Number Theory and Polynomials, Lond. Math. Soc. Lect. Note, Ser., Vol. 352, Cambridge Univ. Press, Cambridge, 2008, pp. 322–349.
T. Zaïmi, On the integer form of the Additive Hilbert’s Theorem 90, Linear Algebra Appl., 390:175–181, 2004.
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Dedicated to Professors Antanas Laurinčikas and Eugenijus Manstavičius on the occasion of their 70th birthdays
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* This research was funded by the European Social Fund according to the activity “Improvement of researchers” qualification by implementing world-class R&D projects’ of Measure No. 09.3.3-LMT-K-712-01-0037.
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Dubickas, A. Mahler measure of a difference of two conjugates*. Lith Math J 59, 48–53 (2019). https://doi.org/10.1007/s10986-019-09424-1
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DOI: https://doi.org/10.1007/s10986-019-09424-1