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Stokes, A. (1962) A Floquet Theory for Functional Differential Equation. Proceedings of the National Academy of Sciences of the United States of America, 48, 1330.
https://doi.org/10.1073/pnas.48.8.1330

has been cited by the following article:

• TITLE: Finite Dimensional Approximation of the Monodromy Operator of a Periodic Delay Differential Equation with Piecewise Constant Orthonormal Functions

  AUTHORS: Eli A. Vazquez, Joaquin Collado

  KEYWORDS: Monodromy Operator, Periodic Delay Differential Equations, Walsh Functions, Block Pulse Functions, Finite Rank Approximation

  JOURNAL NAME: Applied Mathematics, Vol.9 No.11, November 30, 2018

  ABSTRACT: Using piecewise constant orthonormal functions, an approximation of the monodromy operator of a Linear Periodic Delay Differential Equation (PDDE) is obtained by approximating the integral equation corresponding to the PDDE as a linear operator over the space of initial conditions. This approximation allows us to consider the state space as finite dimensional resulting in a finite matrix approximation whose spectrum converges to the spectrum of the monodromy operator.