English

Representations and corepresentations of $p$-equipped posets

Representation Theory 2018-10-05 v1

Abstract

For pp a prime number and P\mathscr{P} a pp-equipped finite partially ordered set we construct two different right-peak algebras (in the sense of \cite{KS}) Λ(r)\Lambda^{(r)} and Λ(c)\Lambda^{(c)}. We consider the category U(r)\mathcal{U}^{(r)} (U(c))\left(\mathcal{U}^{(c)}\right) consisting of the finitely generated right Λ(r)\Lambda^{(r)}-modules (Λ(c)\Lambda^{(c)}-modules) which are socle-projective. The categories U(r)\mathcal{U}^{(r)} and U(c)\mathcal{U}^{(c)} have almost split sequences. We describe he Auslander-Reiten components CU(r)\mathcal{C}_{\mathcal{U}}^{(r)} and CU(c)\mathcal{C}_{\mathcal{U}}^{(c)} of the corresponding simple projective modules in U(r)\mathcal{U}^{(r)} and U(c)\mathcal{U}^{(c)}. Then we prove that there is a bijective correspondence between CU(r)\mathcal{C}_{\mathcal{U}}^{(r)} and CU(c)\mathcal{C}_{\mathcal{U}}^{(c)}, although the corresponding almost split sequences have different shapes.

Keywords

Cite

@article{arxiv.1810.02018,
  title  = {Representations and corepresentations of $p$-equipped posets},
  author = {Raymundo Bautista and Ivon Dorado},
  journal= {arXiv preprint arXiv:1810.02018},
  year   = {2018}
}
R2 v1 2026-06-23T04:27:58.849Z