  A new class of identities for Feynman graph amplitudes, dubbed Schouten
identities, valid at fixed integer value of the dimension d is proposed. The
identities are then used in the case of the two loop sunrise graph with
arbitrary masses for recovering the second order differential equation for the
scalar amplitude in d=2 dimensions, as well as a chained sets of equations for
all the coefficients of the expansions in (d-2). The shift from $d\approx2$ to
$d\approx4$ dimensions is then discussed.
