Geodesic
Solving linear systems of differential and difference equations with respect to a part of the unknowns
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 46 (2006) no. 2, pp. 229-241 Cet article a éte moissonné depuis la source Math-Net.Ru

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The existence of solutions $y$ to a linear differential or difference system whose components $y_{i_1},\dots,y_{i_m}$ belong to a given class of functions and the problem of constructing such components are considered. 
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S. A. Abramov; M. Bronstein. Solving linear systems of differential and difference equations with respect to a part of the unknowns. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 46 (2006) no. 2, pp. 229-241. http://geodesic.mathdoc.fr/item/ZVMMF_2006_46_2_a4/

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