- Differential equations--Congresses (7)
- Differential equations, Partial--Congresses (6)
- Boundary value problems (1)
- Differential operators (1)
- Differential operators--Congresses (1)
- Functional analysis (1)
- Hamiltonian systems (1)
- Inequalities (Mathematics)--Congresses (1)
- Linear topological spaces (1)
- Markus, L. (Lawrence), 1922- (1)
- Operator theory--Congresses (1)
- Spectral theory (Mathematics)--Congresses (1)
- Symplectic manifolds (1)
- Symplectic spaces (1)