Geodesic
A fundamental solution to the Cauchy problem for a fourth-order pseudoparabolic equation
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 49 (2009) no. 1, pp. 99-110 
I. G. Mamedov. A fundamental solution to the Cauchy problem for a fourth-order pseudoparabolic equation. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 49 (2009) no. 1, pp. 99-110. http://geodesic.mathdoc.fr/item/ZVMMF_2009_49_1_a6/
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Voir la notice de l'article provenant de la source Math-Net.Ru

The Cauchy problem for a fourth-order pseudoparabolic equation describing liquid filtration problems in fissured media, moisture transfer in soil, etc., is studied. Under certain summability and boundedness conditions imposed on the coefficients, the operator of this problem and its adjoint operator are proved to be homeomorphism between certain pairs of Banach spaces. Introduced under the same conditions, the concept of a $\theta$-fundamental solution is introduced, which naturally generalizes the concept of the Riemann function to the equations with discontinuous coefficients; the new concept makes it possible to find an integral form of the solution to a nonhomogeneous problem.

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