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Mar5-10, 09:11 AM
I should point out that this is not strictly accurate,
Well, I don't think the strong force has been combined with the other two. There is just an electroweak theory which covers electromagnetism and weak force together!
The standard model is a gauge theory of the strong (SU(3)) and electroweak (SU(2)×U(1)) interactions with the gauge group (sometimes called the Standard Model symmetry group) is SU(3)×SU(2)×U(1). It does not take into account gravitation, which is SO(3,1).