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Article

Keywords:
linear differential equations; global investigations; transformations
Summary:
A survey of investigations of linear differential equations from the point of view of transformations is described. These investigations started in the middle of the last century and continued till the present time. Essential step was done in the fifties by O. Borvka, who started global investigations of the second order equations.
References:
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[4] S. Lie, F. Engel: Theorie der Transformationgruppe. Teubner, Leipzig 1930.
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[8] P. Stäckel: Über Transformationen von Differentialgleichungen. J. Reine Angew. Math. 111 (1893), 290-302.
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