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EXTREME RESULTS ON CERTAIN GENERALIZED RIEMANN DERIVATIVES

机译:某些广义RIEMANN衍生物的极端结果

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In this paper the following question is investigated. Given a natural number r and numbers α_j, β_j for j = 0,1,… , r satisfying α_0 < α_1 < … < α_r and r Σ j=0 β_jα_j~k={0 if k-0,1,…,r-1 r! if k=r is there a 2π-periodic, r - 1 times continuously differentiable function f such that lim sup h↗0 h~(-r)(r Σ j=0 β_jf(x+α_jh)) = lim suph h↘0 h~(-r)(r Σ j=0 β_jf(x+α_jh)) = ∞, lim inf h↗0 h~(-r)(r Σ j=0 β_jf(x+α_jh)) = lim inf h↘0 h~(-r)(r Σ j=0 β_jf(x+α_jh))=-∞ for every x∈R?
机译:本文研究了以下问题。给定自然数r和数j_j,β_j(j = 0,1,...,r满足α_0<α_1<…<α_r且rΣj = 0β_jα_j〜k = {0如果k-0,1,…,r -1 r!如果k = r有一个2π周期的r-1倍连续微分函数f使得lim suph↗0h〜(-r)(rΣj = 0β_jf(x +α_jh))= lim suphh↘ 0 h〜(-r)(rΣj = 0β_jf(x +α_jh))=∞,lim infh↗0h〜(-r)(rΣj = 0β_jf(x +α_jh))= lim inf h↘0h〜(-r)(rΣj = 0β_jf(x +α_jh))=-∞对于每个x∈R?

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