Geodesic
Comparison theorems for fourth order quasilinear matrix differential inequalities
Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali, Série 8, Tome 53 (1972) no. 5, pp. 334-341.

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

Nel presente articolo si stabilisce una "identità Picone" per una classe di matrici di quasilineari diseguaglianze differenziali del quart'ordine. La citata identità servirà a mostrare teoremi di confronto del tipo di Sturm. 
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Chan, C. Y.; Young, E. C. Comparison theorems for fourth order quasilinear matrix differential inequalities. Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali, Série 8, Tome 53 (1972) no. 5, pp. 334-341. http://geodesic.mathdoc.fr/item/RLINA_1972_8_53_5_a1/

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