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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     author = {K. B. Sabitov},
     title = {On positiveness of a~solution to inhomogeneous mixed type equation of higher order},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {65--71},
     publisher = {mathdoc},
     number = {3},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2016_3_a6/}
}
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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/