The tan~2x potential and the eigenvalue and eigenfunction for planar channelling radiation;

Extrapolation method for the eigenvalue approximation of the biharmonic equation;

Extrapolation method for eigenvalue problem of integral equation;

Two Kinds of Methods and Discussion About Eigenvalues of Energy of One-dimension Harmonic Oscillator;

The Index of Real Eigenvalues to some Operators in the Transport Theory;

Two subcritical fission models were developed based on the Godiva critical system to calculate the variation of the k eigenvalues and the α eigenvalues with mass variations of fissile material.

Its' molecular orbital was designed accordingto Hückel molecular graph theory and the wave function and characteristic values were obtained by using molecular orbitalperturbacion theory.

The paper discuss as the characteristic value of hydrogen atom,and get a group of new characteristic function with the help of complex operator.

Calculation of energy characteristic value and characteristic function is the hallo question of quantum mechanics.

So it is necessary to discuss the geometry meaning , eigen value, eigen function and character of projection operator in detail.

The eigen value problem is normative sturm-livouville eigen value problem.

We obtain the eigen value and eigen function in line with the accuracy when the power potential is parabolic potential, square potential well and triangular potential respectively.

The solutions of pass-band symplectic eigenvalues,greatly approximated to analy.

Calculate α eigenvalue in subcritical systems;

Monte Carlo expected estimation method for α eigenvalue calculation;