TY - JOUR TI - The flat geometry of the I_1 singularity: (x,y) -> (x,xy,y^2,y^3) JO - Journal of Singularities PY - 2020 SP - 1 EP - 14 VL - 21 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.5427/jsing.2020.21a/ DO - 10.5427/jsing.2020.21a ID - 10_5427_jsing_2020_21a ER -