Initial trace of positive solutions to fractional diffusion equations with absorption
Initial trace of positive solutions to fractional diffusion equations with absorption
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带吸收的分数扩散方程正解的初始迹
DOI:
10.1016/j.jfa.2018.10.013
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发表时间:
2017-12
影响因子:
1.7
通讯作者:
Véron Laurent
中科院分区:
文献类型:
--
作者:
Chen Huyuan;Véron Laurent
In this paper, we prove the existence of an initial trace T u for any positive solution u to the semilinear fractional diffusion equation (H)∂ t u+(− Δ) s u+ f (t, x, u)= 0 in (0,+∞)× R N, where N≥ 1, the operator (− Δ) s with s∈(0, 1) is the fractional Laplacian, f: R+× R N× R+→ R is a Caratheodory function satisfying f (t, x, u) u≥ 0 for all (t, x, u)∈ R+× R N× R+ and R+=[0,+∞). We define the regular set of the trace T u as an open subset of R u⊂ R N carrying a nonnegative Radon measure ν u such that lim t→ 0∫ R u u (t, x) ζ (x) d x=∫ R u ζ d ν u,∀ ζ∈ C 0 2 (R u), and the singular set S u= R N∖ R u as the set points a such that lim sup t→ 0∫ B ρ (a) u (t, x) d x=+∞ for any ρ> 0. We also study the reverse problem of constructing a positive solution to (H) with a given initial trace (S, ν), where S⊂ R N is a closed set and ν is a positive Radon measure on R= R N∖ S and develop the case f (t, x, u)= t β u p with β>− 1 and p> 1.
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DOI:
10.1007/bf02788083
发表时间:
2001-12
期刊:
Journal d’Analyse Mathématique
影响因子:
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M. Marcus;L. Véron
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M. Marcus;L. Véron
DOI:
10.1016/j.anihpc.2014.08.001
发表时间:
2013-11
期刊:
arXiv: Analysis of PDEs
影响因子:
--
作者:
Huyuan Chen;P. Felmer;A. Quaas
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Huyuan Chen;P. Felmer;A. Quaas
DOI:
10.1016/j.na.2016.08.027
发表时间:
2016-06
期刊:
arXiv: Analysis of PDEs
影响因子:
--
作者:
M. Bonforte;Y. Sire;J. Vázquez
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M. Bonforte;Y. Sire;J. Vázquez
DOI:
10.1016/s1874-5733(04)80010-x
发表时间:
2004-12
期刊:
arXiv: Analysis of PDEs
影响因子:
--
作者:
L. Véron
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L. Véron
DOI:
10.2307/2004985
发表时间:
1968-02
期刊:
--
影响因子:
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作者:
M. R. Spiegel
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M. R. Spiegel