Courant-sharp Robin eigenvalues for the square: The case of negative Robin parameter
Courant-sharp Robin eigenvalues for the square: The case of negative Robin parameter
复制标题
平方的 Courant-sharp Robin 特征值：负 Robin 参数的情况
作者：
K. Gittins;B. Helffer
我们考虑的情况下，有平等的柯朗的节点域定理的拉普拉斯方程的罗宾边界条件的平方。在前两篇文章中，我们分别讨论了Robin参数h > 0大、小的情况。在本文中，我们研究的情况下，h < 0。
We consider the cases where there is equality in Courant’s nodal domain theorem for the Laplacian with a Robin boundary condition on the square. In our previous two papers, we treated the cases where the Robin parameter h > 0 is large, small respectively. In this paper we investigate the case where h < 0.