Results 61 to 70 of about 122,737 (189)

Isoperimetric inequalities for -Hessian equations

open access: yesAdvances in Nonlinear Analysis, 2012
We consider the homogeneous Dirichlet problem for a special -Hessian equation of sub-linear type in a -convex domain , . We study the comparison between the solution of this problem and the (radial) solution of the corresponding problem in a ball having ...
Mohammed Ahmed   +2 more
doaj   +1 more source

Representation of the norming constants by two spectra

open access: yesElectronic Journal of Differential Equations, 2010
The representation of the norming constants by 2 spectra was studied by Levitan, Gasymov (and others) for the Sturm-Liouville problem with boundary conditions $y(0)cosalpha +y'(0)sinalpha=0$, $y(pi)coseta+y'(pi)sineta =0$, when $sin alpha eq 0$ and $
Tigran N. Harutyunyan
doaj  

On an eigenvalue problem associated with the (p, q) − Laplacian

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
Let Ω ⊂ ℝN, N ≥ 2, be a bounded domain with smooth boundary ∂Ω. Consider the following generalized Robin-Steklov eigenvalue problem associated with the operator 𝒜u = − Δpu − Δqu {𝒜u+ρ1(x)|u|p-2u+ρ2(x)|u|q-2u=λα(x)|u|r-2u,   x∈Ω,∂u∂vA+γ1(x)|u|p-2u+γ2(x)|u|
Barbu Luminiţa   +2 more
doaj   +1 more source

Estimating eigenvalues [PDF]

open access: yesProceedings of the American Mathematical Society, 1952
openaire   +2 more sources

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