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Dissertation
Root parametrized differential equations
(2012-10-17)
The present thesis is about the inverse problem in differential Galois Theory. Given a differential field, the inverse problem asks which linear algebraic groups can be realized as differential Galois groups of Picard-Vessiot extensions of this field.
In this thesis we will concentrate on the realization of the classical groups as differential Galois groups. We introduce a method for a very general realization of these groups. This means that we present for the classical groups of Lie rank $l$ explicit linear ...