Multiple periodic solutions of differential delay equations via Hamiltonian systems (I)

Mathematics

• Differential Delay Equations 100%
• Hamiltonian Systems 64%
• Periodic Solution 55%
• Formulation 38%
• Group Action 23%
• Index Theory 17%
• Odd 16%
• Critical point 16%
• Compact Group 14%
• Minimal Period 13%
• Equivariant 13%
• Subspace 9%
• Proposition 9%
• Theorem 9%
• Invariant 7%
• Gradient vector 6%
• Reuse 6%
• Skew symmetric matrix 6%
• Denote 5%
• Galerkin Approximation 5%
• Integer 4%
• Well-defined 4%
• System of Ordinary Differential Equations 4%
• Lyapunov 4%
• Vector Field 3%
• Hilbert space 3%
• Symmetry 3%
• Class 1%

Engineering & Materials Science

• Hamiltonians 84%
• Hilbert spaces 23%
• Ordinary differential equations 18%