Chinese Quarterly Journal of Mathematics ›› 1990, Vol. 5 ›› Issue (1-2): 38-46.
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Abstract: The prensent paper is a resume in the qualitative researches of the ultrahyperbolic equation,it involves a new proof of Asgeirsson's mean value theorem,extensions of mean value theorem,non-analyticity of the generalized potential solution,extensionality of solution,boundary problems and the elementary solution. Especially,we stggest to study ultrahyperbolic equation by means of the elementary solution,which is a natural way.
凌岭. 超双曲型方程定性研究的一些问题[J]. Chinese Quarterly Journal of Mathematics, 1990, 5(1-2): 38-46.
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https://sxjk.magtechjournal.com/EN/Y1990/V5/I1-2/38