Small solutions to inhomogeneous linear equations over number fields
Small solutions to inhomogeneous linear equations over number fields
复制标题
数域上非齐次线性方程的小解
DOI:
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发表时间:
1993
期刊:
影响因子:
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通讯作者:
J. Vaaler
中科院分区:
文献类型:
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作者:
R. O’Leary;J. Vaaler
We consider a system of M independent, inhomogeneous linear equations in N > M variables having coefficients in an algebraic number field k. We give a best possible lower bound on the inhomogeneous height of a solution vector in k N and determine when a solution exists in (O s ) N , where O s is the ring of S-integers in k. If such a system has a solution vector in (O s ) N , we show that it has a solution ζ in (O s ) N such that the inhomogeneous height of ζ is relatively small. We give an explicit upper bound for this height in terms of the heights of the matrices defining the linear system. Our method uses geometry of numbers over adele spaces and local to global arguments