Geodesic
On Fredholm solvability of Vragov boundary value problem for a mixed even-order equation
Matematičeskie zametki SVFU, Tome 23 (2016), pp. 19-30.

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We consider the boundary value problem of V. N. Vragov for mixed type equations of even order with elliptic operator in space variables. We prove the generalized solvability, dense solvability, uniqueness of generalized solutions and Fredholm solvability of the boundary value problem in the corresponding Sobolev spaces.
Keywords: mixed type equation, Fredholm solvability, boundary value problem, generalized solution, inequality, evaluation, operator equation. 
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     author = {I. E. Egorov},
     title = {On {Fredholm} solvability of {Vragov} boundary value problem for a mixed even-order equation},
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I. E. Egorov. On Fredholm solvability of Vragov boundary value problem for a mixed even-order equation. Matematičeskie zametki SVFU, Tome 23 (2016), pp. 19-30. http://geodesic.mathdoc.fr/item/SVFU_2016_23_a1/

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