%0 Journal Article %T Teissier's problem on proportionality of nef and big classes over a compact K£¿hler manifold %A Jixiang Fu %A Jian Xiao %J Mathematics %D 2014 %I arXiv %X We solve Teissier's proportionality problem for transcendental nef classes over a compact K\"ahler manifold which says that the equality in the Khovanskii-Teissier inequalities hold for two nef and big classes if and only if the two classes are proportional. This result recovers the previous one of Boucksom-Favre-Jonsson for the case of nef and big line bundles over a (complex) projective algebraic manifold. %U http://arxiv.org/abs/1410.4878v1