Fermion mass matrices, textures and beyond

The issue of texture specific fermion mass matrices have been examined briefly from the bottom-up' perspective. In case no conditions are imposed, the texture ansatze leads to a large number of viable possibilities. However, besides textures, if in case one incorporates the ideas of natural mass matrices’ and uses the facility of Weak Basis Transformations, then one is able to arrive at a minimal finite set of viable mass matrices in the case of quarks.