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Does an exact three-fold symmetry exist in physics?

  1. Mar 22, 2007 #1
    An isolated electron and positron depict an exact two-fold symmetry. Are there any examples in physics of a truly triplicate symmetry? If not, what constraints are there that prevent it?
     
  2. jcsd
  3. Mar 22, 2007 #2
    How about that for baryons composed of three identical quarks?
     
  4. Mar 22, 2007 #3

    Mentz114

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    To be very picky, the electron/positron symmetry is an exact anti-symmetry like the anti-symmetry between E and B in EM. The spinor wave equation pair have a change of sign, or they would be symmetrical.

    I've been told I'm a pedant already.
     
  5. Mar 23, 2007 #4
    How about the color charges of quarks?
     
  6. Mar 23, 2007 #5

    vanesch

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    cyclic rotation of x y and z axis in space ?
     
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