当前位置: X-MOL 学术J. Approx. Theory › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Dimension independent Bernstein–Markov inequalities in Gauss space
Journal of Approximation Theory ( IF 0.9 ) Pub Date : 2020-01-24 , DOI: 10.1016/j.jat.2020.105377
Alexandros Eskenazis , Paata Ivanisvili

We obtain the following dimension independent Bernstein–Markov inequality in Gauss space: for each 1p< there exists a constant Cp>0 such that for any k1 and all polynomials P on Rk we have PLp(Rk,dγk)Cp(degP)12+1πarctan|p2|2p1PLp(Rk,dγk),where dγk is the standard Gaussian measure on Rk. We also show that under some mild growth assumptions on any function BC2((0,))C([0,)) with B,B>0 we have RkB|LP(x)|dγk(x)RkB10(degP)αB|P(x)|dγk(x)where L=Δx is the generator of the Ornstein–Uhlenbeck semigroup and αB=1+2πarctan12sups(0,)sB(s)B(s)+B(s)sB(s)2.



中文翻译:

高斯空间中与维无关的伯恩斯坦-马尔可夫不等式

我们在高斯空间中获得以下维独立的Bernstein-Markov不等式: 1个p< 存在一个常数 Cp>0 这样对于任何 ķ1个 和所有多项式 P[Rķ 我们有 P大号p[RķdγķCpP1个2+1个πArctan|p-2|2p-1个P大号p[Rķdγķ哪里 dγķ 是标准的高斯测度 [Rķ。我们还表明,在任何功能的某些温和增长假设下C20C[0>0 我们有 [Rķ|大号PX|dγķX[Rķ10Pα|PX|dγķX哪里 大号=Δ-X 是Ornstein–Uhlenbeck半群的生成器, α=1个+2πArctan1个2SUPs0sss+sss-2

更新日期:2020-01-24
down
wechat
bug