Pengcheng YinJiyi ZhangXiying SunDi HuZhifeng ShiChengyan Wu2025-05-142025-05-14https://tustorage.ulb.tu-darmstadt.de/handle/tustorage/29706550A Vertex Concavity-Convexity Detection Method for Three-Dimensional Spatial Objects Based on Geometric Algebrasupplierxml