970 resultados para preconditioning convection-diffusion equation matrix equation


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* Work is partially supported by the Lithuanian State Science and Studies Foundation.

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The paper is devoted to the study of the Cauchy problem for a nonlinear differential equation of complex order with the Caputo fractional derivative. The equivalence of this problem and a nonlinear Volterra integral equation in the space of continuously differentiable functions is established. On the basis of this result, the existence and uniqueness of the solution of the considered Cauchy problem is proved. The approximate-iterative method by Dzjadyk is used to obtain the approximate solution of this problem. Two numerical examples are given.

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Mathematics Subject Classification: 42B35, 35L35, 35K35

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Mathematics Subject Classification: 26A33, 45K05, 60J60, 60G50, 65N06, 80-99.

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Mathematics Subject Classification: 44A40, 45B05

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Mathematics Subject Class.: 33C10,33D60,26D15,33D05,33D15,33D90

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Mathematics Subject Classification: 26A33, 76M35, 82B31

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Mathematics Subject Classification: 45G10, 45M99, 47H09

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Mathematics Subject Classification: 26A33; 70H03, 70H25, 70S05; 49S05

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The method for the computation of the conditional probability density function for the nonlinear Schrödinger equation with additive noise is developed. We present in a constructive form the conditional probability density function in the limit of small noise and analytically derive it in a weakly nonlinear case. The general theory results are illustrated using fiber-optic communications as a particular, albeit practically very important, example.

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2000 Mathematics Subject Classification: Primary 46F25, 26A33; Secondary: 46G20

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Mathematics Subject Classification: 26A33, 31B10

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Mathematics Subject Classification 2010: 45DB05, 45E05, 78A45.

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Mathematics Subject Classification 2010: 26A33, 33E12, 35S10, 45K05.

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Dedicated to Professor A.M. Mathai on the occasion of his 75-th birthday. Mathematics Subject Classi¯cation 2010: 26A33, 44A10, 33C60, 35J10.