The Geometry of Phase Transitions in Diffusion Models: Tubular Neighbourhoods and Singularities. - Manato Yaguchi; Kotaro Sakamoto; Ryosuke Sakamoto; Masato Tanabe; Masatomo Akagawa; Yusuke Hayashi; Masahiro Suzuki 001; Yutaka Matsuo (Trans. Mach. Learn. Res., 2025)