Map Definition and 402 Threads

"These gravity anomalies, as they are known, are imperceptible to the human senses, and so the scientists have wrapped the data on to a sphere and exaggerated the highs and lows." http://news.bbc.co.uk/2/hi/science/nature/3093927.stm

Let φ SU(2) ---> SO(3) be the double covering Any irreducible representation of SO(3) pulls back by φ to provide an irreducible representation of SU(2) on the same finite dimensional Hilbert space. this seems clear, almost not worth saying: the pullback is obviously irred. and...