Geodesic
One-valued solvability of a nonlocal problem for the axisymmetric Helmholtz equation
Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ, no. 2 (2011), pp. 5-14 Cet article a éte moissonné depuis la source Math-Net.Ru

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A nonlocal boundary value problem for degenerate elliptic equation is considered. Boundary value of this problem considerably depend on low derivative coefficient changes. Existence and uniqueness of a solution are proved.
Keywords: non-local problem, Bessel equation, Riesz basis, uniform convergence of series. 
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     title = {One-valued solvability of a~nonlocal problem for the axisymmetric {Helmholtz} equation},
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A. A. Abashkin. One-valued solvability of a nonlocal problem for the axisymmetric Helmholtz equation. Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ, no. 2 (2011), pp. 5-14. http://geodesic.mathdoc.fr/item/VSGU_2011_2_a0/

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