Original: In that book , Dirac incorporated the previous work of Werner Heisenberg on matrix mechanics and of Erwin Schrödinger on wave mechanics into a single mathematical formalism that associates measurable quantities to operators acting on the Hilbert space of vectors that describe the state of a physical system .
Simplified: Dirac worked out a formulation of quantum mechanics , which includes Erwin Schrödingers wave mechanics and Werner Heisenbergs matrix mechanics in 1926 .