Abstract
We prove sharp homogeneous improvements to L 1 weighted Hardy inequalities involving distance from the boundary. In the case of a smooth domain, we obtain lower and upper estimates for the best constant of the remainder term. These estimates are sharp in the sense that they coincide when the domain is a ball or an infinite strip. In the case of a ball, we also obtain further improvements.
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Acknowledgements
I would like to thank my Ph.D. supervisor, Prof. Stathis Filippas, for his essential help in this work.
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Communicated by Luis Caffarelli.
Partially supported by the State Scholarships Foundation of Greece (I.K.Y.).
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Psaradakis, G. L 1 Hardy Inequalities with Weights. J Geom Anal 23, 1703–1728 (2013). https://doi.org/10.1007/s12220-012-9302-8
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DOI: https://doi.org/10.1007/s12220-012-9302-8
Keywords
- Hardy’s inequality
- Distance function
- Best constants
- Semiconcavity
- Sets with positive reach
- Mean convex sets
- Cheeger constant