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| Content Provider | Springer Nature Link |
|---|---|
| Author | Cao, Jun Yang, DaChun |
| Copyright Year | 2012 |
| Abstract | Let L be a one-to-one operator of type ω having a bounded H $_{∞}$ functional calculus and satisfying the k-Davies-Gaffney estimates with k ∈ ℕ. In this paper, the authors introduce the Hardy space H L p (ℝ$^{ n }$) with p ∈ (0, 1] associated with L in terms of square functions defined via $$\left\{ {e^{ - t^{2k} L} } \right\}_{t > 0}$$ and establish their molecular and generalized square function characterizations. Typical examples of such operators include the 2k-order divergence form homogeneous elliptic operator L $_{1}$ with complex bounded measurable coefficients and the 2k-order Schrödinger type operator L $^{2}$:= (−Δ)$^{ k }$ + V $^{ k }$, where Δ is the Laplacian and 0 ⩽ V ∈ L loc k (ℝ$^{ n }$). Moreover, as an application, for i ∈ {1, 2}, the authors prove that the associated Riesz transform ▿ $^{ k }$(L i −1/2 ) is bounded from $$H_{L_i }^p \left( {\mathbb{R}^n } \right)$$ to H $^{ p }$(ℝ$^{ n }$) for p ∈ (n/(n + k), 1] and establish the Riesz transform characterizations of $$H_{L_1 }^p \left( {\mathbb{R}^n } \right)$$ for p ∈ (rn/(n + kr), 1] if $$\left\{ {e^{ - tL_1 } } \right\}_{t > 0}$$ satisfies the L $^{ r }$ − L $^{2}$ k-off-diagonal estimates with r ∈ (1, 2]. These results when k:= 1 and L:= L $_{1}$ are known. |
| Starting Page | 1403 |
| Ending Page | 1440 |
| Page Count | 38 |
| File Format | |
| ISSN | 16747283 |
| Journal | Science in China Series A: Mathematics |
| Volume Number | 55 |
| Issue Number | 7 |
| e-ISSN | 18691862 |
| Language | English |
| Publisher | SP Science China Press |
| Publisher Date | 2012-04-01 |
| Publisher Place | Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Hardy space Hardy-Sobolev space k-Davies-Gaffney estimate Schrödinger type operator higher order elliptic operator semigroup square function higher order Riesz transform molecule Applications of Mathematics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Mathematics |
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