N = ratio of the strengths of gravity to that of electromagnetism;
Epsilon (ε) = strength of the force binding nucleons into nuclei;
Omega (ω) = relative importance of gravity and expansion energy in the Universe; Lambda (λ) = cosmological constant;
Q = ratio of the gravitational energy required to pull a large galaxy apart to the energy equivalent of its mass;
D = number of spatial dimensions in space time.