  A Schroedinger equation proposed for the GMP gapped spin-2 mode of fractional
Quantum Hall states is found from a novel non-relativistic limit, applicable
only in 2+1 dimensions, of the massive spin-2 Fierz-Pauli field equations. It
is also found from a novel null reduction of the linearized Einstein field
equations in 3+1 dimensions, and in this context a uniform distribution of
spin-2 particles implies, via a Brinkmann-wave solution of the non-linear
Einstein equations, a confining harmonic oscillator potential for the
individual particles.
