English

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

Category Theory 2024-04-01 v2

Abstract

Let k\mathbf{k} be a field and let V:Ck-ModV: \mathscr{C} \to \mathbf{k}\textup{-Mod} be a point-wise finite dimensional persistence modules, where C\mathscr{C} is a small category. Assume that for all local Artinian k\mathbf{k}-algebras RR with residue field isomorphic to k\mathbf{k}, there is a generalized persistence module M:CR-ModM: \mathscr{C} \to R\textup{-Mod}, such that for all xOb(C)x\in \mathrm{Ob}(\mathscr{C}), M(x)M(x) is free over RR with finite rank and kRM(x)V(x)\mathbf{k}\otimes_R M(x)\cong V(x). If VV is a direct sum of indecomposable persistence modules VI:Ck-ModV_I: \mathscr{C}\to \mathbf{k}\textup{-Mod} with endomorphism ring isomorphic to k\mathbf{k}, then MM is a direct sum of indecomposables MI:CR-ModM_I:\mathscr{C}\to R\textup{-Mod} with endomorphism ring isomorphic to RR

Keywords

Cite

@article{arxiv.2403.05032,
  title  = {Liftings of point-wise finite dimensional persistence modules over local commutative Artinian rings},
  author = {José A. Vélez-Marulanda},
  journal= {arXiv preprint arXiv:2403.05032},
  year   = {2024}
}