Liftings of point-wise finite dimensional persistence modules over local commutative Artinian rings

Abstract

Let $\mathbf{k}$ be a field and let $V:\mathcal{C}\to \mathbf{k}\text{-Mod}$ be a point-wise finite dimensional persistence modules, where $\mathcal{C}$ is a small category. Assume that for all local Artinian $\mathbf{k}$-algebras $R$ with residue field isomorphic to $\mathbf{k}$, there is a generalized persistence module $M:\mathcal{C}\to R\text{-Mod}$, such that for all $x\in \mathrm{Ob}(\mathcal{C})$, $M(x)$ is free over $R$ with finite rank and $\mathbf{k}{\otimes }_{R}M(x)\cong V(x)$. If $V$ is a direct sum of indecomposable persistence modules $V_I:\mathcal{C}\to \mathbf{k}\text{-Mod}$ with endomorphism ring isomorphic to $\mathbf{k}$, then $M$ is a direct sum of indecomposables $M_I:\mathcal{C}\to R\text{-Mod}$ with endomorphism ring isomorphic to $R$