In this paper, by estimates of spectral of an integral operator, the authors give a theorem on the existence of solutions for first order differential difference equations with boundary condition.
摘要通过对积分算子谱的估计，作者给出了一阶线性微分差分方程在边值条件下解的存在唯一性定理。
2
Applying the full wave analysis for aperture coupled microstrip antennas, the spectral domain integral equations are founded and solved numerically by the method of moments.
本文利用全波分析，建立了口径耦合微带天线的谱域积分方程，并用矩量法求其数值解。
3
In this paper, by estimates of spectral of an integral operator, the authors give a theorem on the existence of solutions for first order differential difference equations with boundary condition.