The essential spectrum of Neumann Laplacians on some bounded singular domains
The essential spectrum of Neumann Laplacians on some bounded singular domains
复制标题
某些有界奇异域上的诺依曼拉普拉斯算子的本质谱
DOI:
10.1016/0022-1236(91)90130-w
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发表时间:
1991
影响因子:
1.7
通讯作者:
B. Simon
中科院分区:
文献类型:
--
作者:
R. Hempel;L. Seco;B. Simon
In the present paper we consider Neumann Laplacians on singular domains of the type “rooms and passages” or “combs” and we show that, in typical situations, the essential spectrum can be determined from the geometric data. Moreover, given an arbitrary closed subset S of the non-negative reals, we construct domains Ω= Ω (S) such that the essential spectrum of the Neumann Laplacian on Ω is just this set S.