Geodesic
Comparison theorems for a coupled system of singular hyperbolic differential inequalities. I. Time-independent uncoupling coefficients
Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali, Série 8, Tome 66 (1979) no. 4, pp. 250-254.

Voir la notice de l'article provenant de la source Biblioteca Digitale Italiana di Matematica

L'articolo contiene teoremi di confronto per un sistema accoppiato di disequazioni differenziali iperboliche singolari nel caso in cui i coefficienti di accoppiamento non dipendono dal tempo. 
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     title = {Comparison theorems for a coupled system of singular hyperbolic differential inequalities. {I.} {Time-independent} uncoupling coefficients},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali},
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Chan, C.Y.; Young, Eutiquio C. Comparison theorems for a coupled system of singular hyperbolic differential inequalities. I. Time-independent uncoupling coefficients. Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali, Série 8, Tome 66 (1979) no. 4, pp. 250-254. http://geodesic.mathdoc.fr/item/RLINA_1979_8_66_4_a2/

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