TY - JOUR AU - Daniel C. Douglas AU - Zhe Sun TI - Tropical Fock–Goncharov coordinates for $\mathrm {SL}_3$-webs on surfaces I: construction JO - Forum of Mathematics, Sigma PY - 2024 VL - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1017/fms.2023.120/ DO - 10.1017/fms.2023.120 LA - en ID - 10_1017_fms_2023_120 ER -