Hardy's integral inequality for commutators of Hardy operators.
Hardy-type inequalities for Hermite expansions.
Hardy-type inequalities on the real line.
Harmonic analysis and the geometry of subsets of Rn.
This subject has several natural points of view, but we shall start with the one that corresponds to the following question: Is there something like Littlewood-Paley theory which is useful for analyzing the geometry of subsets of Rn, in much the same way that traditional Littlewood-Paley theory is good for analyzing functions and operators?
Harmonic analysis of the space BV.
We establish new results on the space BV of functions with bounded variation. While it is well known that this space admits no unconditional basis, we show that it is almost characterized by wavelet expansions in the following sense: if a function f is in BV, its coefficient sequence in a BV normalized wavelet basis satisfies a class of weak-l1 type estimates. These weak estimates can be employed to prove many interesting results. We use them to identify the interpolation spaces between BV and Sobolev...
Harmonic functions and Hardy spaces on trees with boundaries
Hausdorff dimension, projections, and the Fourier transform.
This is a survey on transformation of fractal type sets and measures under orthogonal projections and more general mappings.
Hausdorff operator on Morrey spaces and Campanato spaces
We study the high-dimensional Hausdorff operators on the Morrey space and on the Campanato space. We establish their sharp boundedness on these spaces. Particularly, our results solve an open question posted by E. Liflyand (2013).
Heisenberg-Pauli-Weyl uncertainty principle for the Riemann-Liouville operator.
Hermite functions and uncertainty principles for the Fourier and the windowed Fourier transforms.
We extend an uncertainty principle due to Beurling into a characterization of Hermite functions. More precisely, all functions f on Rd which may be written as P(x)exp(-(Ax,x)), with A a real symmetric definite positive matrix, are characterized by integrability conditions on the product f(x)f(y). We then obtain similar results for the windowed Fourier transform (also known, up to elementary changes of functions, as the radar ambiguity function or the Wigner transform). We complete the paper with...
Hessian determinants as elements of dual Sobolev spaces
In this short note we present new integral formulas for the Hessian determinant. We use them for new definitions of Hessian under minimal regularity assumptions. The Hessian becomes a continuous linear functional on a Sobolev space.
Higher integrability for maximal oscillatory Fourier integrals.
Higher Integrability Results.
Higher integrability with weights.
Hilbert transform, Toeplitz operators and Hankel operators and invariant A∞ weights.
In this paper, several sufficient conditions for boundedness of the Hilbert transform between two weighted Lp-spaces are obtained. Invariant A∞ weights are obtained. Several characterizations of invariant A∞ weights are given. We also obtain some sufficient conditions for products of two Toeplitz operators of Hankel operators to be bounded on the Hardy space of the unit circle using Orlicz spaces and Lorentz spaces.
Hilbert transforms and maximal functions along rough flat curves.
Hölder quasicontinuity in variable exponent Sobolev spaces.
Holomorphic Sobolev spaces on the ball [Book]
Homeomorphisms acting on Besov and Triebel-Lizorkin spaces of local regularity ψ(t).
The aim of this paper is to show that the integral and derivative operators defined by local regularities are homeomorphisms for generalized Besov and Triebel-Lizorkin spaces with local regularities. The underlying geometry is that of homogeneous type spaces and the functions defining local regularities belong to a larger class of growth functions than the potentials tα, related to classical fractional integral and derivative operators and Besov and Triebel-Lizorkin spaces.
Homeomorphisms preserving Ap.