Geodesic
On a differential inequality of the type \(X'' + f(t)X \geq 0\)
Commentationes Mathematicae, Tome 21 (1979) no. 2, pp. 325-326.

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DOI : 10.14708/cm.v21i2.5992
Mots-clés : 
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     author = {M. Kierla\'nczyk},
     title = {On a differential inequality of the type {\(X''} + {f(t)X} \geq 0\)},
     journal = {Commentationes Mathematicae},
     pages = { 325--326},
     publisher = {mathdoc},
     volume = {21},
     number = {2},
     year = {1979},
     doi = {10.14708/cm.v21i2.5992},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v21i2.5992/}
}
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M. Kierlańczyk. On a differential inequality of the type \(X'' + f(t)X \geq 0\). Commentationes Mathematicae, Tome 21 (1979) no. 2, pp.  325-326. doi : 10.14708/cm.v21i2.5992. http://geodesic.mathdoc.fr/articles/10.14708/cm.v21i2.5992/

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