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We explore the feasibility of the discrete flavor symmetry S3 to explain the pattern of neutrino masses and mixings. In the flavor basis, the neutrino mass matrix is taken to be invariant under S3 symmetry at the zeroth order. The effects of breaking S3 symmetry by matrices invariant under different S2 subgroups of S3 are studied. The resulting retrocirculant perturbation matrix leads to the perturbed...
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