| http://www.w3.org/ns/prov#value | - G -> H -> ... -> SU(3) x SU(2) x U(1) -> SU(3) x U(1) Here, each arrow represents a symmetry breaking phase transition where matter changes form and the groups - G, H, SU(3), etc. - represent the different types of matter, specifically the symmetries that the matter exhibits and they are associated with the different fundamental forces of nature How is the time line of the universe constructed?
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