Multivariate Diophantine equations with many solutions

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dc.creatorEvertse, J. -H.
dc.creatorMoree, P.
dc.creatorStewart, C. L.
dc.creatorTijdeman, R.
dc.date2001-07-30
dc.date.accessioned2026-07-07T04:42:47Z
dc.date.available2026-07-07T04:42:47Z
dc.descriptionWe show that for each n-tuple of positive rational integers (a_1,..,a_n) there are sets of primes S of arbitrarily large cardinality s such that the solutions of the equation a_1x_1+...+a_nx_n=1 with the x_i all S-units are not contained in fewer than exp((4+o(1))s^{1/2}(log s)^{-1/2}) proper linear subspaces of C^n. This generalizes a result of Erdos, Stewart and Tijdeman for m=2 [Compositio 36 (1988), 37-56]. Furthermore we prove that for any algebraic number field K of degree n, any integer m with 1<=m<n, and any sufficiently large s there are integers b_0,...,b_m in a number field which are linearly independent over the rationals, and prime numbers p_1,...,p_s, such that the norm polynomial equation |N_{K/Q}(b_0+b_1x_1+...+b_mx_m)|=p_1^{z_1}...p_s^{z_s} has at least exp{(1+o(1)){n/m}s^{m/n}(log s)^{-1+m/n}) solutions in integers x_1,..,x_m,z_1,..,z_s. This generalizes a result of Moree and Stewart [Indag. Math. 1 (1990), 465-472]. Our main tool, also established in this paper, is an effective lower bound for the number of ideals in a number field K of norm <=X composed of prime ideals which lie outside a given finite set of prime ideals T and which have norm <=Y. This generalizes a result of Canfield, Erdos and Pomerance [J. Number Th. 17 (1983), 1-28], and of Moree and Stewart (see above).
dc.description29 pages
dc.identifierhttps://arxiv.org/abs/math/0107219
dc.identifierhttp://arxiv.org/abs/math/0107219
dc.identifierActa Arith. 107 (2003), 103-125
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/61932
dc.subjectNumber Theory
dc.subject11D57;11D61
dc.titleMultivariate Diophantine equations with many solutions
dc.typetext

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