New Constraint on Weak CP Phase, Rephasing Invariant and Maximal CP   Violation
  By using the relation between CP-violation phase and the mixing angles in Cabibbo-Kobayashi-Maskawa matrix postulated by us before, the rephasing invariant is recalculated. Furthermore, the problem about maximal CP violation is discussed. We find that the maximal value of Jarlskog's invariant is about 0.038. And it presents at alpha=1.239, beta=1.574 and gamma=0.327 in triangle db. 
Yong Liu