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1 269 (0,229s)

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Spectral Isoperimetric Inequality for the Delta' -Interaction on a Contour

We consider the problem of geometric optimization for the lowest eigenvalue of the two-dimensional Schrödinger operator with an attractive Delta'-interaction of a fixed strength, the support of which is a C2-smooth contour. Under the constra...

Pure mathematics

  • 2021
  • C
  • Link
Result

An Eigenvalue Symmetric Matrix Contractor

We propose an eigenvalue contractor for symmetric matrices. Given a symmetric interval matrix A and an interval approximation of its eigenvalue sets the contractor reduces the entries of A such that no matrix with eigenvalues

BD - Teorie informace

  • 2011
  • Jx
Result

Estimates of the principal eigenvalue of the p-Laplacian

We provide estimates from below and from above for the principal eigenvalue of the p-Laplacian on a bounded domain. We apply these estimates to study the asymptotic behavior of the principal eigenvalue for p ? +oo....

BA - Obecná matematika

  • 2012
  • Jx
  • Link
Result

Half-linear eigenvalue problem: Limit behavior of the first eigenvalue for shrinking interval

We investigate the limit behavior of the first eigenvalue of the half-linear eigenvalue problem when the length of the interval tends to zero. We show that the important role is played by the limit behavior of ratios of primitive fu...

BA - Obecná matematika

  • 2013
  • Jx
  • Link
Result

On the Variational Eigenvalues Which Are Not of Ljusternik-Schnirelmann Type

We discuss nonlinear homogeneous eigenvalue problems and the variational characterization of their eigenvalues. We focus on the Ljusternik-Schnirelmann method, present-Fischerminimaxprinciple in the linear case. At the end we presen...

BA - Obecná matematika

  • 2012
  • Jx
  • Link
Result

The ratio of eigenvalues of the Dirichlet eigenvalue problem for equations with one-dimensional p-Laplacian

We establish an estimate for the ratio of eigenvalues of the Dirichlet eigenvalue problem for the equation with one-dimensional p-Laplacian involving a nonnegative unimodal (single-well) potential....

BA - Obecná matematika

  • 2010
  • Jx
Result

Optimal Control Systems with Prescribed Eigenvalues

The eigenvalues of a linear and time-invariant control system can be located at desired positions either directly, using eigenvalue assignment techniques inducesa certain eigenvalue pattern, depending on the performance ind...

BC - Teorie a systémy řízení

  • 2010
  • D
Result

An oscillation theorem for discrete eigenvalue problem

Eigenvalue problems for symplectic difference systems are considered. The main result of the paper, an oscillation theorem, relates the number of eigenvalues to the number of generalized zeros of solutions....

BA - Obecná matematika

  • 2003
  • Jx
Result

Estimates of the principal eigenvalue of the p-biharmonic operator

We provide estimates from below and from above for the principal eigenvalue of the p-biharmonic operator on a bounded domain with the Navier boundary conditions. We apply these estimates to study the asymptotic behavior of the principal ...

BA - Obecná matematika

  • 2012
  • Jx
  • Link
Result

The first eigenvalue and eigenfunction of a nonlinear elliptic system

In this paper, we study the first eigenvalue of a nonlinear elliptic system involving p-Laplacian as the differential operator. The principal eigenvalue and numerically. An alternative proof to show the simplicity of the first e...

Pure mathematics

  • 2019
  • Jimp
  • Link
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