An estimate of the Hopf degree of fractional Sobolev mappings
An estimate of the Hopf degree of fractional Sobolev mappings
复制标题
分数 Sobolev 映射的 Hopf 度的估计
DOI:
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Jean Van Schaftingen
中科院分区:
文献类型:
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作者:
A. Schikorra;Jean Van Schaftingen
We estimate the Hopf degree for smooth maps $f$ from $mathbb{S}^{4n-1}$ to $mathbb{S}^{2n}$ in the fractional Sobolev space.
Namely we show that for $s in [1 - frac{1}{4n}, 1]$
[
left |{
m deg}_H(f)
ight | lesssim [f]_{W^{s,frac{4n-1}{s}}}^{frac{4n}{s}}. ]
Our argument is based on the Whitehead integral formula and commutator estimates for Jacobian-type expressions.
影响因子:
1.7
作者:
Peter Gladbach;Heiner Olbermann
通讯作者:
Heiner Olbermann