On the Morse index with constraints: An abstract formulation
On the Morse index with constraints: An abstract formulation
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关于带有约束的莫尔斯指数:一个抽象的表述
DOI:
10.1016/j.jmaa.2023.127317
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发表时间:
2023
影响因子:
1.3
通讯作者:
Zhou, Detang
中科院分区:
文献类型:
--
作者:
Tran, Hung;Zhou, Detang
The Morse index is an essential quantity in understanding the second variation of a geometric functional. In this paper, we study an abstract formulation of that concept in the context of a variational problem with constraints. Particularly, we examine the index and nullity of a symmetric bounded bilinear form in a Hilbert space and determine quantitatively how they change when restricting to a subspace of a finite codimension.