64 resultados para Local solutions of partial differential equations


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2010 Mathematics Subject Classification: 35B65, 35S05, 35A20.

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2010 Mathematics Subject Classification: 74J30, 34L30.

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2010 Mathematics Subject Classification: 35R60, 60H15, 74H35.

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Some oscillation criteria for solutions of a general perturbed second order ordinary differential equation with damping (r(t)x′ (t))′ + h(t)f (x)x′ (t) + ψ(t, x) = H(t, x(t), x′ (t)) with alternating coefficients are given. The results obtained improve and extend some existing results in the literature.

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A dichotomysimilar property for a class of homogeneous differential equations in an arbitrary Banach space is introduced. By help of them, existence of quasi bounded solutions of the appropriate nonhomogeneous equation is proved.

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MSC 2010: 26A33, 35R11, 35R60, 35Q84, 60H10 Dedicated to 80-th anniversary of Professor Rudolf Gorenflo

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2000 Mathematics Subject Classification: 34K15, 34C10.

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MSC 2010: 34A08, 34A37, 49N70

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MSC 2010: 15A15, 15A52, 33C60, 33E12, 44A20, 62E15 Dedicated to Professor R. Gorenflo on the occasion of his 80th birthday

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Sufficient conditions for the existence of Lp(k)-solutions of linear nonhomogeneous impulsive differential equations with unbounded linear operator are found. An example of the theory of the linear nonhomogeneous partial impulsive differential equations of parabolic type is given.

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MSC 2010: 26A33, 34A37, 34K37, 34K40, 35R11

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In this paper we present a spectral criterion for existence of mean-periodic solutions of retarded functional differential equations with a time-independent main part.

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Mathematics Subject Classification: 26A33, 34A25, 45D05, 45E10

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2000 Mathematics Subject Classification: 45F15, 45G10, 46B38.

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MSC 2010: 44A35, 44A45, 44A40, 35K20, 35K05