Multiparameter singular integrals on the Heisenberg group: uniform estimates
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- by Marco Vitturi and James Wright PDF
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Abstract:
We consider a class of multiparameter singular Radon integral operators on the Heisenberg group ${\mathbb H}^1$ where the underlying submanifold is the graph of a polynomial. A remarkable difference with the euclidean case, where Heisenberg convolution is replaced by euclidean convolution, is that the operators on the Heisenberg group are always $L^2$ bounded. This is not the case in the euclidean setting where $L^2$ boundedness depends on the polynomial defining the underlying surface. Here we uncover some new, interesting phenomena. For example, although the Heisenberg group operators are always $L^2$ bounded, the bounds are not uniform in the coefficients of polynomials with fixed degree. When we ask for which polynomials uniform $L^2$ bounds hold, we arrive at the same class where uniform bounds hold in the euclidean case.References
- Anthony Carbery, Fulvio Ricci, and James Wright, Maximal functions and Hilbert transforms associated to polynomials, Rev. Mat. Iberoamericana 14 (1998), no. 1, 117–144. MR 1639291, DOI 10.4171/RMI/237
- Anthony Carbery, Stephen Wainger, and James Wright, Double Hilbert transforms along polynomial surfaces in $\mathbf R^3$, Duke Math. J. 101 (2000), no. 3, 499–513. MR 1740686, DOI 10.1215/S0012-7094-00-10135-4
- Anthony Carbery, Stephen Wainger, and James Wright, Singular integrals and the Newton diagram, Collect. Math. Vol. Extra (2006), 171–194. MR 2264209
- Michael Christ, Alexander Nagel, Elias M. Stein, and Stephen Wainger, Singular and maximal Radon transforms: analysis and geometry, Ann. of Math. (2) 150 (1999), no. 2, 489–577. MR 1726701, DOI 10.2307/121088
- Charles Fefferman, On the divergence of multiple Fourier series, Bull. Amer. Math. Soc. 77 (1971), 191–195. MR 279529, DOI 10.1090/S0002-9904-1971-12675-7
- Joonil Kim, Hilbert transforms along curves in the Heisenberg group, Proc. London Math. Soc. (3) 80 (2000), no. 3, 611–642. MR 1744778, DOI 10.1112/S0024611500012284
- Alexander Nagel, Fulvio Ricci, and Elias M. Stein, Singular integrals with flag kernels and analysis on quadratic CR manifolds, J. Funct. Anal. 181 (2001), no. 1, 29–118. MR 1818111, DOI 10.1006/jfan.2000.3714
- Alexander Nagel and Stephen Wainger, $L^{2}$ boundedness of Hilbert transforms along surfaces and convolution operators homogeneous with respect to a multiple parameter group, Amer. J. Math. 99 (1977), no. 4, 761–785. MR 450901, DOI 10.2307/2373864
- Yibiao Pan, Uniform estimates for oscillatory integral operators, J. Funct. Anal. 100 (1991), no. 1, 207–220. MR 1124299, DOI 10.1016/0022-1236(91)90108-H
- Sanjay Patel, Double Hilbert transforms along polynomial surfaces in $\mathbf R^3$, Glasg. Math. J. 50 (2008), no. 3, 395–428. MR 2451738, DOI 10.1017/S0017089508004291
- Malabika Pramanik and Chan Woo Yang, Double Hilbert transform along real-analytic surfaces in $\Bbb R^{d+2}$, J. Lond. Math. Soc. (2) 77 (2008), no. 2, 363–386. MR 2400397, DOI 10.1112/jlms/jdm113
- F. Ricci and E. M. Stein, Multiparameter singular integrals and maximal functions, Ann. Inst. Fourier (Grenoble) 42 (1992), no. 3, 637–670 (English, with English and French summaries). MR 1182643, DOI 10.5802/aif.1304
- Fulvio Ricci and E. M. Stein, Harmonic analysis on nilpotent groups and singular integrals. I. Oscillatory integrals, J. Funct. Anal. 73 (1987), no. 1, 179–194. MR 890662, DOI 10.1016/0022-1236(87)90064-4
- Fulvio Ricci and Elias M. Stein, Harmonic analysis on nilpotent groups and singular integrals. II. Singular kernels supported on submanifolds, J. Funct. Anal. 78 (1988), no. 1, 56–84. MR 937632, DOI 10.1016/0022-1236(88)90132-2
- Elias M. Stein, Singular integrals and differentiability properties of functions, Princeton Mathematical Series, No. 30, Princeton University Press, Princeton, N.J., 1970. MR 0290095
- Elias M. Stein, Harmonic analysis: real-variable methods, orthogonality, and oscillatory integrals, Princeton Mathematical Series, vol. 43, Princeton University Press, Princeton, NJ, 1993. With the assistance of Timothy S. Murphy; Monographs in Harmonic Analysis, III. MR 1232192
- Elias M. Stein and Brian Street, Multi-parameter singular Radon transforms, Math. Res. Lett. 18 (2011), no. 2, 257–277. MR 2784671, DOI 10.4310/MRL.2011.v18.n2.a6
- Elias M. Stein and Brian Street, Multi-parameter singular Radon transforms III: Real analytic surfaces, Adv. Math. 229 (2012), no. 4, 2210–2238. MR 2880220, DOI 10.1016/j.aim.2011.11.016
- Elias M. Stein and Brian Street, Multi-parameter singular Radon transforms II: The $L^p$ theory, Adv. Math. 248 (2013), 736–783. MR 3107526, DOI 10.1016/j.aim.2013.08.016
- Elias M. Stein and Stephen Wainger, The estimation of an integral arising in multiplier transformations, Studia Math. 35 (1970), 101–104. MR 265995, DOI 10.4064/sm-35-1-101-104
- Brian Street, Multi-parameter Carnot-Carathéodory balls and the theorem of Frobenius, Rev. Mat. Iberoam. 27 (2011), no. 2, 645–732. MR 2848534, DOI 10.4171/RMI/650
- Brian Street, Multi-parameter singular Radon transforms I: The $L^2$ theory, J. Anal. Math. 116 (2012), 83–162. MR 2892618, DOI 10.1007/s11854-012-0004-8
- Brian Street, Multi-parameter singular integrals, Annals of Mathematics Studies, vol. 189, Princeton University Press, Princeton, NJ, 2014. MR 3241740, DOI 10.1515/9781400852758
Additional Information
- Marco Vitturi
- Affiliation: School of Mathematical Sciences, University College Cork, Western Gateway Building, Western Road, Cork T12 XF62, Ireland
- Email: marco.vitturi@ucc.ie
- James Wright
- Affiliation: School of Mathematics and Maxwell Institute for Mathematical Sciences, University of Edinburgh, JCMB, King’s Buildings, Peter Guthrie Tait Road, Edinburgh EH9 3FD, Scotland
- MR Author ID: 325654
- Email: J.R.Wright@ed.ac.uk
- Received by editor(s): August 31, 2018
- Received by editor(s) in revised form: October 25, 2019
- Published electronically: May 26, 2020
- © Copyright 2020 American Mathematical Society
- Journal: Trans. Amer. Math. Soc. 373 (2020), 5439-5465
- MSC (2010): Primary 42B15, 42B20, 43A30, 43A80
- DOI: https://doi.org/10.1090/tran/8079
- MathSciNet review: 4127882