Transference of Fractional Laplacian Regularity
Transference of Fractional Laplacian Regularity
复制标题
分数拉普拉斯正则性的传递
DOI:
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
P. R. Stinga
中科院分区:
文献类型:
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作者:
L. Roncal;P. R. Stinga
In this note we show how to obtain regularity estimates for the fractional Laplacian on the multidimensional torus (mathbb{T}^{n}) from the fractional Laplacian on (mathbb{R}^{n}). Though at first glance this may seem quite natural, it must be carefully precised. A reason for that is the simple fact that L 2 functions on the torus cannot be identified with L 2 functions on (mathbb{R}^{n}). The transference is achieved through a formula that holds in the distributional sense. Such an identity allows us to transfer Harnack inequalities, to relate the extension problems, and to obtain pointwise formulas and Holder regularity estimates.