“…For a more general version we refer to Chang, Krantz and Stein's work in [CKS93] 1 . In order to make the paper self-contained, we decided to include the proof of the result below.…”
Abstract. We show that the energy density of critical points of a class of conformally invariant variational problems with small energy on the unit 2-disk B 1 ⊂ R 2 lies in the local Hardy space h 1 (B 1 ). As a corollary we obtain a new proof of the energy convexity and uniqueness result for weakly harmonic maps with small energy on B 1 .
“…For a more general version we refer to Chang, Krantz and Stein's work in [CKS93] 1 . In order to make the paper self-contained, we decided to include the proof of the result below.…”
Abstract. We show that the energy density of critical points of a class of conformally invariant variational problems with small energy on the unit 2-disk B 1 ⊂ R 2 lies in the local Hardy space h 1 (B 1 ). As a corollary we obtain a new proof of the energy convexity and uniqueness result for weakly harmonic maps with small energy on B 1 .
“…Although it is not immediate from this definition, for sufficiently regular domains, the Hardy space H 1 (Ω) consists of restrictions to Ω of functions in H 1 (R n ) [45], see also [9,43] for Lipschitz domains. Obviously, these are regular distributions; actually we have the inclusion…”
Section: Hardy-orlicz Spacesmentioning
confidence: 99%
“…There is quite an extensive literature concerning definitions of the Hardy spaces in a domain Ω ⊂ R n , [9,8,14,15,35,42,43,45]. Let us briefly outline the general concept of a maximal function of a distribution f ∈ D (Ω).…”
In this work, we consider the Cauchy problem for u ′ − Au = f with A the Laplacian operator on some Riemannian manifolds or a sublapacian on some Lie groups or some second order elliptic operators on a domain. We show the boundedness of the operator of maximal regularity f → Au and its adjoint on appropriate Hardy spaces which we define and study for this purpose. As a consequence we reobtain the maximal L q regularity on L p spaces for 1 < p, q < ∞.
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