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Under the hood, mathematical problems called partial differential equations (PDEs ... but their methods often apply only to linear problems or to a single PDE. A more general approach by ...

Unified treatment of continuous and discrete time systems from a state-variable viewpoint; emphasis on linear systems. Concept of state, writing and solving state equations, controllability and ...

His work involves the use of algebra to investigate geometry and symmetry, and has focused on using those ideas to find solutions for differential equations ... involving linear PDEs, was done ...