Adams' inequalities for bi-Laplacian and extremal functions in dimension four
Adams' inequalities for bi-Laplacian and extremal functions in dimension four
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四维双拉普拉斯函数和极值函数的 Adams 不等式
DOI:
10.1016/j.aim.2008.10.011
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发表时间:
2009-03
影响因子:
1.7
通讯作者:
Lu, Guozhen
中科院分区:
文献类型:
--
作者:
Yang, Yunyan;Lu, Guozhen
Let Ω⊂R4be a smooth oriented bounded domain, H02(Ω) be the Sobolev space, and [Formula: see text] be the first eigenvalue of the bi-Laplacian operator Δ2. Then for any α: 0⩽α<λ(Ω), we have and the above supremum is infinity when α⩾λ(Ω). This strengthens Adams' inequality in dimension 4 [D. Adams, A sharp inequality of J. Moser for high order derivatives, Ann. of Math. 128 (1988) 365–398] where he proved the above inequality holds for α=0. Moreover, we prove that for sufficiently small α an extremal function for the above inequality exists. As a special case of our results, we thus show that there exists u*∈H02(Ω)∩C4(Ω¯) with ‖Δu*‖22=1 such that This establishes the existence of an extremal function of the original Adams inequality in dimension 4.
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DOI:
10.1007/978-0-387-49319-0
发表时间:
1941
期刊:
--
影响因子:
--
作者:
J. Jost
通讯作者:
J. Jost
影响因子:
3
作者:
W. Cohn;G. Lu
通讯作者:
W. Cohn;G. Lu
DOI:
10.1515/9781400826162
发表时间:
2004-05
期刊:
--
影响因子:
--
作者:
Olivier Druet;Emmanuel Hebey;F. Robert
通讯作者:
Olivier Druet;Emmanuel Hebey;F. Robert
DOI:
10.2307/121073
发表时间:
1999-05
期刊:
--
影响因子:
--
作者:
F. Lin
通讯作者:
F. Lin
影响因子:
4.9
作者:
D. Adams
通讯作者:
D. Adams