Global Internal Symmetry
Z2 (matter parity) not related to U(1)R in any way for this particular model
Read more about this topic: Flipped SU(5)
Famous quotes containing the words global, internal and/or symmetry:
“The Sage of Toronto ... spent several decades marveling at the numerous freedoms created by a “global village” instantly and effortlessly accessible to all. Villages, unlike towns, have always been ruled by conformism, isolation, petty surveillance, boredom and repetitive malicious gossip about the same families. Which is a precise enough description of the global spectacle’s present vulgarity.”
—Guy Debord (b. 1931)
“You will see Coleridge—he who sits obscure
In the exceeding lustre and the pure
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Which, with its own internal lightning blind,
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A cloud-encircled meteor of the air,
A hooded eagle among blinking owls.”
—Percy Bysshe Shelley (1792–1822)
“What makes a regiment of soldiers a more noble object of view than the same mass of mob? Their arms, their dresses, their banners, and the art and artificial symmetry of their position and movements.”
—George Gordon Noel Byron (1788–1824)