%0 Journal Article %T The flat geometry of the I_1 singularity: (x,y) -> (x,xy,y^2,y^3) %J Journal of Singularities %D 2020 %P 1-14 %V 21 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5427/jsing.2020.21a/ %R 10.5427/jsing.2020.21a %F 10_5427_jsing_2020_21a