11 citations · 11 across the 2 of their papers we have counts for
3 papers
math.DG2005
A generalized Morse index theorem
Chaofeng Zhu
In this paper, we prove a Morse index theorem for the index form of even order linear Hamiltonian systems on the closed interval with reasonable self-adjoint boundary conditions. T…
math.DG2004★ 11 cited
Weak Symplectic Functional Analysis and General Spectral Flow Formula
Bernhelm Booss-Bavnbek, Chaofeng Zhu
We consider a continuous curve of self-adjoint Fredholm extensions of a curve of closed symmetric operators with fixed minimal domain and fixed {\it intermediate} domain $D_W…
math.DS2001
Closed characteristics on compact convex hypersurfaces in
Yiming Long, Chaofeng Zhu
For any given compact C^2 hypersurface Σin {\bf R}^{2n} bounding a strictly convex set with nonempty interior, in this paper an invariant \varrho_n(Σ) is defined and satisfies \var…