Abstract
A new type of invisible-axion model based on the recent variant axion models is presented. It belongs to the N=1 type model and hence is free of domain-wall problems. The Peccei-Quinn-symmetry transformations are not totally generation and flavor blind which may help in understanding the small values of electron and u-quark and large t-quark masses. The light neutrino mass pattern in the two-Higgs-singlet models can have a very different hierarchy which differs from the other type of invisible-axion models. 1989 The American Physical Society.