Geodesic
A problem with the Frankl and Bitsadze--Samarskii condition on the line of degeneracy and on parallel characteristics for a~mixed-type equation
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (2012), pp. 43-52.

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In this paper we study a boundary-value problem with the Frankl and Bitsadze–Samarskii condition on the line of degeneracy and on parallel characteristics for a mixed-type equation with a singular coefficient. We prove the existence of a solution by the method of integral equations, and we do its uniqueness with the help of the extremum principle.
Mots-clés : extremum principle, unique solvability, existence of solution, integral equations. 
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     title = {A problem with the {Frankl} and {Bitsadze--Samarskii} condition on the line of degeneracy and on parallel characteristics for a~mixed-type equation},
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M. Kh. Ruziev. A problem with the Frankl and Bitsadze--Samarskii condition on the line of degeneracy and on parallel characteristics for a~mixed-type equation. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (2012), pp. 43-52. https://geodesic-test.mathdoc.fr/item/IVM_2012_8_a4/

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