DIPS 3/2003 [tex source, PostScript, PDF file, dvi]

Title: Reducibility of zero curvature representations with application to recursion operators.

Author: Michal MARVAN

We present a criterion of reducibility of a zero curvature representation to a solvable subalgebra, hence to a chain of conservation laws. Namely, we show that reducibility is equivalent to the existence of a section of the generalized Riccati covering. Results are applied to conversion between Guthrie's and Olver's form of recursion operators.

32 pages, LaTeX-2e.

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