Abstract
The main aim of this note is to prove sharp weighted integral Hardy inequality and conjugate integral Hardy inequality on homogeneous Lie groups with any quasi-norm for the range \(1<p\le q<\infty \). We also calculate the precise value of sharp constants in respective inequalities, improving the result of Ruzhansky and Verma (Proc R Soc A 475:20180310, 2019) in the case of homogeneous groups.
Similar content being viewed by others
Data availability statements
Data sharing not applicable to this article as no datasets were generated or analysed during the current study
References
Christ, M., Grafakos, L.: Best constants for two nonconvolution inequalities. Proc. Am. Math. Soc. 123(6), 1687–1693 (1995)
Davies, E.B.: A review of Hardy inequalities. Operator Theory: Advances and Applications. In: The Maz’ya anniversary collection, vol. 2 (Rostock, 1998), vol. 110, pp. 55–67. Birkhäuser, Basel
Edmunds, D.E., Evans, W.D.: Hardy Operators, Function Spaces and Embeddings. Springer Monographs in Mathematics. Springer, Berlin (2004)
Fischer, V., Ruzhansky, M.: Quantization on Nilpotent Lie groups. Progress in Mathematics, vol. 314. Birkhäuser, Basel (2016)
Folland, G.B., Stein, E.M.: Estimates for the \(\overline{\partial _{b}}\) complex and analysis on the Heisenberg group. Commun. Pure Appl. Math. 27, 429–522 (1974)
Folland, G.B., Stein, E.M.: Hardy Spaces on Homogeneous Groups. Mathematical Notes, vol. 28. Princeton University Press, Princeton (1982)
Frank, R.L., Lieb, E.H.: Sharp constants in several inequalities on the Heisenberg group. Ann. Math. 176, 349–381 (2012)
Hardy, G.H.: Notes on a theorem of Hilbert. Math. Z. 6, 314–317 (1920)
Hardy, G.H.: Notes on some points in the integral calculus, LX. A. inequality between integrals. Messenger Math. 54, 150–156 (1925)
Hardy, G.H.: Notes on some points in the integral calculus, LXI. further inequalities between integrals. Messenger Math. 57, 12–16 (1927)
Kokilashvili, V., Meshki, A., Persson, L.-E.: Weighted Norm Inequalities for Integral Transforms with Product Kernels. Nova Science Publishers, New York (2010)
Kufner, A., Persson, L.-E., Samko, N.: Weighted Inequalities of Hardy Type, 2nd edn. World Scientific Publishing Co. Pte. Ltd., Hackensack, NJ (2003)
Kufner, A., Persson, L.-E.: Weighted Inequalities of Hardy Type. World Scientific Publishing Co., Inc., River Edge, NJ (2003)
Kufner, A., Maligranda, L., Persson, L.-E.: The prehistory of the Hardy inequality. Am. Math. Mon. 113, 715–732 (2006)
Kufner, A., Maligranda, L., Persson, L.-E.: The Hardy Inequality—About its History and Some Related Results, Pilsen (2007)
Opic, B., Kufner, A.: Hardy-Type Inequalities. Pitman Research Notes in Mathematics Series, vol. 219. Longman Scientific and Technical, Harlow (1990)
Persson, L.-E., Samko, S.G.: A note on the best constants in some Hardy inequalities. J. Math. Inequal. 9(2), 437–447 (2015). https://doi.org/10.7153/jmi-09-37
Ruzhansky, M., Suragan, D.: Hardy and Rellich inequalities, identities, and sharp remainders on homogeneous groups. Adv. Math. 317, 799–822 (2017). https://doi.org/10.1016/j.aim.2017.07.020
Ruzhansky, M., Suragan, D.: Hardy Inequalities on Homogeneous Groups: 100 years of Hardy Inequalities. Progress in Mathematics, vol. 327. Springer, Cham (2019)
Ruzhansky, M., Verma, D.: Hardy inequalities on metric measure spaces. Proc. R. Soc. A. 475, 20180310 (2019)
Ruzhansky, M., Verma, D.: Hardy inequalities on metric measure spaces, II: the case \(p>q\). Proc. R. Soc. A 477, 20210136 (2021)
Ruzhansky, M., Yessirkegenov, N.: Hypoelliptic Functional Inequalities. arXiv:1805.01064v1 (2018)
Acknowledgements
The second author expresses her sincere gratitude to Ghent analysis and PDE center, Ghent University, Belgium for their financial assistance and hospitality during her research visit.
Funding
MR is supported by the FWO Odysseus 1 Grant G.0H94.18N: Analysis and Partial Differential Equations, the Methusalem Programme of the Grant University Special Research Fund (BOF) (Grant No. 01M01021) and by EPSRC Grant EP/R003025/2. AS is supported by UGC Non-Net Fellowship by Banaras Hindu University, India. The research visit of AS is supported by the Methusalem Programme of the Ghent University Special Research Fund (BOF) Grant No. 01M01021.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
On behalf of all authors, the corresponding author states that there is no conflict of interest.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Ruzhansky, M., Shriwastawa, A. & Tiwari, B. A Note on Best Constants for Weighted Integral Hardy Inequalities on Homogeneous Groups. Results Math 79, 29 (2024). https://doi.org/10.1007/s00025-023-02058-3
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s00025-023-02058-3