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On estimating of a fourth-order differential equations.
Summary: We find the optimal upper bound of the principal eigenvalue for fourth-order self-adjoint two-point boundary eigenvalue problems. The estimates depend on the coefficients of the differential equation as they vary over a given class of equimeasurable functions.openaire +2 more sources
On the Spectrum of a Fourth Order Elliptic Equation With Variable Exponent
Nonlinear Analysis: Theory, Methods & Applications, 2009exaly
Fourth order scattering matrix elements of nucleons with a fourth order meson equation
1960openaire +1 more source