A technically defined Group characterizing a system of linear differential equations

for , ..., , where are Complex Analytic Functions of in a given Complex Domain.

**References**

Iyanaga, S. and Kawada, Y. (Eds.). ``Monodromy Groups.'' §253B in
*Encyclopedic Dictionary of Mathematics.* Cambridge, MA: MIT Press, p. 793, 1980.

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1999-05-26