Geodesic
The estimation for the indexes of linear differential systems with perturbation
Dalʹnevostočnyj matematičeskij žurnal, Tome 1 (2000) no. 1, pp. 43-50 
G. G. Durnov. The estimation for the indexes of linear differential systems with perturbation. Dalʹnevostočnyj matematičeskij žurnal, Tome 1 (2000) no. 1, pp. 43-50. http://geodesic.mathdoc.fr/item/DVMG_2000_1_1_a5/
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Voir la notice de l'article provenant de la source Math-Net.Ru

The estimation for indexes of linear differential systems with perturbation are presented. The results are based on the theorem frequency of Jakubovich-Calman. The considered perturbation belongs to the special class of operators.

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