Boundedness of bilinear pseudo-differential operators of S 0 , 0 -type on L 2 × L 2

Boundedness of bilinear pseudo-differential operators of S 0 , 0 -type on L 2 × L 2
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S 0 , 0型双线性伪微分算子在L 2 × L 2 上的有界性

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发表时间:
2021
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通讯作者:
Naohito Tomita
Naohito Tomita
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作者:
Tomoya Kato;Akihiko Miyachi;Naohito Tomita

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我们扩展了已知结果,即双线性 Hörmander 类 BS − n / 2 0 , 0 ( R n ) 中符号的双线性伪微分算子从 L 2 × L 2 到 h 1 有界。我们证明,对于每个 1 < r ≤ 2,这些运算符也有从 L 2 × L 2 到 L r 的界限。此外,对于比 BS − n / 2 0 , 0 ( R n ) 更宽的符号类,我们给出了类似的结果。我们还给出了有限平滑度符号的结果
Weextendtheknownresultthatthebilinearpseudo-differentialoperatorswithsymbols in the bilinear Hörmander class BS − n / 2 0 , 0 ( R n ) are bounded from L 2 × L 2 to h 1 . We show that those operators are also bounded from L 2 × L 2 to L r for every 1 < r ≤ 2. Moreover we give similar results for symbol classes wider than BS − n / 2 0 , 0 ( R n ) . We also give results for symbols of limited smoothness