Polynomial averages and pointwise ergodic theorems on nilpotent groups
Polynomial averages and pointwise ergodic theorems on nilpotent groups
复制标题
幂零群上的多项式平均值和逐点遍历定理
DOI:
10.1007/s00222-022-01159-0
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发表时间:
2023
影响因子:
3.1
通讯作者:
Szarek, Tomasz Z.
中科院分区:
文献类型:
--
作者:
Ionescu, Alexandru D.;Magyar, Ákos;Mirek, Mariusz;Szarek, Tomasz Z.
We establish pointwise almost everywhere convergence for ergodic averages along polynomial sequences in nilpotent groups of step two of measure-preserving transformations on-finite measure spaces. We also establish corresponding maximal inequalities onforand-variational inequalities onfor. This gives an affirmative answer to the Furstenberg–Bergelson–Leibman conjecture in the linear case for all polynomial ergodic averages in discrete nilpotent groups of step two. Our proof is based on almost-orthogonality techniques that go far beyond Fourier transform tools, which are not available in the non-commutative, nilpotent setting. In particular, we develop what we call anilpotent circle methodthat allows us to adapt some of the ideas of the classical circle method to the setting of nilpotent groups.
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影响因子:
1.7
作者:
Mariusz Mirek;E. Stein;Pavel Zorin
通讯作者:
Pavel Zorin
DOI:
10.1007/s11854-007-0010-4
发表时间:
2007
期刊:
Journal d'Analyse Mathématique
影响因子:
--
作者:
Á. Magyar;E. Stein;S. Wainger
通讯作者:
S. Wainger
DOI:
10.1007/s11854-011-0006-y
发表时间:
2009
期刊:
Journal d'Analyse Mathématique
影响因子:
--
作者:
Patrick LaVictoire
通讯作者:
Patrick LaVictoire
影响因子:
1
作者:
Tim Austin
通讯作者:
Tim Austin
影响因子:
3.7
作者:
A. Ionescu;E. Stein;Á. Magyar;S. Wainger
通讯作者:
S. Wainger