摘要：
It's proved that the discrete Morse functions on digraphs are flat Witten-Morse functions and the discrete Morse functions with the same zero-point set are equivalent, inducing the same Morse complex.
王 冲.
有向图上的离散Morse函数及其等价性(英文)
[J]. 南开大学学报（自然科学版）, 2023,(2): 7-.
