Operator theory Congresses 3 Banach algebras 1 Banach spaces 1 Functional analysis 1 Functions, Special 1 Hilbert space 1 Mais ... Inequalities (Mathematics) 1 Invariant subspaces 1 Inverse problems (Differential equations) 1 Matrices 1 Moment problems (Mathematics) 1 Quantum theory 1 Scattering (Mathematics) 1 menos ...