Multilinear Fourier Multipliers with Minimal Sobolev Regularity, I
نویسندگان
چکیده
We find optimal conditions on m-linear Fourier multipliers to give rise to bounded operators from a product of Hardy spaces Hj , 0 < pj ≤ 1, to Lebesgue spaces Lp. The conditions we obtain are necessary and sufficient for boundedness and are expressed in terms of L2-based Sobolev spaces. Our results extend those obtained in the linear case (m = 1) by Calderón and Torchinsky [1] and in the bilinear case (m = 2) by Miyachi and Tomita [14]. We also prove a coordinate-type Hörmander integral condition which we use to obtain certain extreme cases.
منابع مشابه
Multilinear Fourier Multipliers with Minimal Sobolev Regularity
Letm be a positive integer. In this talk, we will introduce optimal conditions,expressed in terms of Sobolev spaces, on m-linear Fourier multiplier operatorsto be bounded from a product of Lebesgue or Hardy spaces to Lebesgue spaces.Our results are sharp and cover the bilinear case (m = 2) obtained by Miyachiand Tomita [1]. References[1] Miyachi A., and Tomita N., Minima...
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