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关于洪绍方的一个定理的注记 被引量:1

Remark on a theorem of Hong
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摘要 作者证明了洪绍方在1999年所得到的一个定理det[ψf,g,h(xi,xj)]≥∏nk=1∑d|xk,d xt,xt<xkf(d)g2(xdk)在更一般的条件下仍然成立. Let f, g and h be arithmetical functions, define φf ,g, h ( t, r) = ∑d|(t,r), f( d ) g ( t/d ) h ( r/d ) . Suppose that f(d) ≥0 and g (d) = h (d) ∈ R for any d | x and any x ∈ S, where S = { x1,…, xn } is a set of ndistinct positive integers. In this note the authors prove that det[φf, g,h(xi,xj)]≥ ∏k=1d|xk,d|xt,xt〈xk^n∑f(d)g^2(xk/d) , improving a result obtained by Hong in 1999.
出处 《四川大学学报(自然科学版)》 CAS CSCD 北大核心 2008年第4期744-746,共3页 Journal of Sichuan University(Natural Science Edition)
基金 教育部新世纪优秀人才支持计划基金(NCET-06-0785)
关键词 算术函数 矩阵 行列式 下界 arithmetical function, matrix, determinant, lower bound
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参考文献5

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同被引文献27

  • 1谭千蓉,林宗兵,刘浏.两个互素因子链上的幂GCD矩阵的行列式与幂LCM矩阵的行列式的整除性[J].四川大学学报(自然科学版),2009,46(6):1581-1584. 被引量:6
  • 2Bourque K,Ligh S.On GCD and LCM matrices[J].Linear Algebra Appl,1992,174:65.
  • 3Bourque K,Ligh S.Matrices associated with classes of arithmetical functions[J].Number Theory,1993,45:367.
  • 4Bourque K,Ligh S.Matrices associated with arithmetical functions[J].Linear Multilinear Algebra,1993,34:261.
  • 5Cao W.On Hongs conjecture for power LCM matrices[J].Czechoslovak Math,2007,57:253.
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  • 7Feng W,Hong S,Zhao J.Divisibility properties of power LCM matrices by power GCD matrices on gcd-closed sets[J].Discrete Math,2009,309:2627.
  • 8Haukkanen P,Korkee I.Notes on the divisibility of LCM and GCD matrices[J].International J Math and Math Science,2005,6:925.
  • 9He C,Zhao J.More on divisibility of determinants of LCM matrices on GCD-closed sets[J].Southeast Asian Bull Math,2005,29:887.
  • 10Hilberdink T.Determinants of multiplicative Toeplitz matrices[J].Acta Arith,2006,125:265.

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