%0 Journal Article %A Nobuyoshi Motohashi %T Approximation theory of uniqueness conditions by existence conditions %J Fundamenta Mathematicae %D 1984 %P 127-142 %V 120 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-120-2-127-142/ %R 10.4064/fm-120-2-127-142 %G en %F 10_4064_fm_120_2_127_142