The symbol will be a pyramid with formuals written on it:
four *triangles* symbolize four 3-dimensional equations:
north side: Coulomb's law div E = epsilon rho
east side: Faraday's induction law rot E = 0
south side: 3. Maxwell law div B =0
west side: Biot-Savart law rot B = m j
and one square symbolizes one 4-dimensional equation of spacetime:
pyramid bottom: Einstein's gravity law G = kappa T
which gives a pyramid, symbolizing Kaluzas 5-dimensional relativity
from which these equations can be derived.
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site about 5 dimensional Physics of gravitational drive