A note on uniqueness of entropy solutions to degenerate parabolic equations in $${\mathbb{R}^N}$$
A note on uniqueness of entropy solutions to degenerate parabolic equations in $${\mathbb{R}^N}$$
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关于 $${mathbb{R}^N}$$ 中简并抛物方程熵解的唯一性的说明
DOI:
10.1007/s00030-009-0042-9
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
M. Maliki
中科院分区:
文献类型:
--
作者:
B. Andreianov;M. Maliki
We study the Cauchy problem infor the parabolic equationwhich can degenerate into a hyperbolic equation for some intervals of values ofu. In the context of conservation laws (the caseφ≡ 0), it is known that an entropy solution can be non-unique whenF′ has singularities. We show the uniqueness of an entropy solution to the general parabolic problem for allL∞initial datum, under the isotropic condition on the fluxFknown for conservation laws. The only assumption on the diffusion term is thatφis a non-decreasing continuous function.