中文

具有非奇异核的平移和函数极大值的交错性

经典分析与常微分方程 2023-06-30 v3

摘要

在先前论文中,我们研究了所谓的平移和函数 F(x,t):=J(t)+j=1nνjK(txj)F({\mathbf{x}},t):=J(t)+\sum_{j=1}^n \nu_j K(t-x_j),其中 J:[0,1]R:=R{}J:[0,1]\to \underline{\mathbb{R}}:={\mathbb{R}}\cup\{-\infty\} 是一个“充分非退化”且有上界的“场函数”,而 K:[1,1]RK:[-1,1]\to \underline{\mathbb{R}} 是一个固定的“核函数”,在 (1,0)(-1,0)(0,1)(0,1) 上均凹,并且满足奇异性条件 K(0)=limt0K(t)=K(0)=\lim_{t\to 0} K(t)=-\infty。对于节点系统 x:=(x1,,xn){\mathbf{x}}:=(x_1,\ldots,x_n)(其中 x0:=0x1xn1=:xn+1x_0:=0\le x_1\le\dots\le x_n\le 1=:x_{n+1}),我们分析了局部极大值向量 m:=(m0,m1,,mn){\mathbf{m}}:=(m_0,m_1,\ldots,m_n) 的行为,其中 mj:=mj(x):=supxjtxj+1F(x,t)m_j:=m_j({\mathbf{x}}):=\sup_{x_j\le t\le x_{j+1}} F({\mathbf{x}},t)。在其他结果中,我们证明了一个强交错性质:若核函数在 (1,0)(-1,0) 上递减且在 (0,1)(0,1) 上递增,且场函数上半连续,则对任意两个不同的节点系统,存在 i,ji,j 使得 mi(x)<mi(y)m_i({\mathbf{x}})<m_i({\mathbf{y}})mj(x)>mj(y)m_j({\mathbf{x}})>m_j({\mathbf{y}})。本文我们部分成功地将此性质推广到甚至非奇异核的情形。

关键词

引用

@article{arxiv.2210.06387,
  title  = {Intertwining of maxima of sum of translates functions with nonsingular kernels},
  author = {Bálint Farkas and Béla Nagy and Szilárd Gy. Révész},
  journal= {arXiv preprint arXiv:2210.06387},
  year   = {2023}
}

备注

The current v3 is a very slightly corrected version with a few updated references (former ArXiv prerints have already appeared or accepted, and this is now signified). Note that a v2 version was uplodaed recently by mistake (that was intended to be an updated new version for another paper) - it was requested that v2 be removed from the records of this paper. arXiv admin note: text overlap with arXiv:2210.04348, arXiv:2112.10169