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We are concerned at first with a class of oscillatory functions, which are not necessarily solutions of differential equations. Using some properties of these functions, we discuss forced oscillations and relative oscillations for the equation y″(x) p(x)y(x)=f(x). A correlation with respect to oscillations between p and f is disclosed. 相似文献
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本文考虑通过Yukawa相互作用的耦合耗散Klein-Gordon-Schrodinger方程组的初边值问题,证明了整体吸引子的存在性。 相似文献
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分布的非线性理论在萌芽中 总被引:1,自引:0,他引:1
分布(广义函数)的线性理论及其应用早已为人所知,例如见:L.Schwartz,Application of distributions to the study of elementaryparticles in relativistic quantum mechanics,Tech.Rep.7,NRO41—221,Dept.of Math.,Univ.of California,Bekerley,1961. 相似文献
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本文用另一途经,即结合摄动法与积分方程,讨论了粘弹性杆的非线性固有值问题,证明了具无限重数的非可列无限个固有值的存在。这种处理方法适合用于相当一般的情况. 相似文献
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陈庆益 《数学物理学报(B辑英文版)》1981,(1)
Using integrals in complex space,more precisely,inte-grals similar to Hoermander's step integrals,in this paper weconstruct global fundamental solutions for some linear partialdifferential operators(1.p.d.o)with variable coefficients,in-cluding some operators of principal type and non-principal typewith higher multiple characteristics. 相似文献
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