Geodesic
On positiveness of a~solution to inhomogeneous mixed type equation of higher order
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (2016), pp. 65-71.

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For an inhomogeneous equation of mixed elliptic-hyperbolic type of higher order we establish sign-definiteness of a solution depending on the sign of the right-side side.
Keywords: mixed type equation, high order, maximum principle, positivity of solution. 
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K. B. Sabitov. On positiveness of a~solution to inhomogeneous mixed type equation of higher order. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (2016), pp. 65-71. http://geodesic.mathdoc.fr/item/IVM_2016_3_a6/

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