Su un problema al contorno per un' equazione di tipo iperbolico di ordine 2m

zbMath0185.34402MaRDI QIDQ2536289

Paolo de Lucia

Publication date: 1967

Published in: Ricerche di Matematica (Search for Journal in Brave)

zbMATH Keywords

partial differential equations

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A Carathéodory theory for systems of integral equations, Étude de quelques problèmes d'existence globale concernant l'équation \[ {\partial r+S_u\over\partial x^r\partial y^s}=f(x,y,u,{\partial u\over \partial x},{\partial u\over\partial y},\dots,{\partial p+qu\over\partial x^p\partial y^q},\dots,)\begin{cases} 0\leq p\leq r\\ 0\leq q\leq s\\ p+q\leq r+s.\end{cases} \]