Computing Generalized Ranks of Persistence Modules via Unfolding to Zigzag Modules

Tamal K. Dey, Cheng Xin

For a $P$-indexed persistence module $\mathsf{M}$, the (generalized) rank of $\mathsf{M}$ is defined as the rank of the limit-to-colimit map for the diagram of vector spaces of $\mathsf{M}$…