Lax Representation
The Nahm equations can be written in the Lax form as follows. Set
then the system of Nahm equations is equivalent to the Lax equation
As an immediate corollary, we obtain that the spectrum of the matrix A does not depend on z. Therefore, the characteristic equation
which determines the so-called spectral curve in the twistor space TP1, is invariant under the flow in z.
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