activity
20092026
most citedGeneral Presentations of Algebras

11 citations · 51 across the 23 of their papers we have counts for

collaborators

25 papers

math.RT2026

Ramified Quivers with Potentials, Monodromy Characters, and Cluster Bases I

Jiarui Fei

We construct categorical models and cluster characters for skew-symmetrizable cluster algebras admitting good ramified realizations. Goodness is equivalent to nondegenerate realiza…

math.RT2026

Symmetric Branching via Laurent Phenomenon Algebras

Jiarui Fei

We construct Laurent phenomenon structures on reductive branching algebras. For , , and the exceptional inclusions , $E_6\downa…

math.RT2026

Cluster Algebras for Bosonic Plethysm

Yelin Fan, Jiarui Fei

Let be an algebraically closed field of characteristic zero, let and , and set \[ \mathcal R_{\ell,m}=\operatorname{Sym}(\operatorname{Sym}^2V\oti…

math.RT2026

A Polyhedral Formula for Kronecker Coefficients via Cluster Algebras

Jiarui Fei, Chenxin Xue

Let \[ \Bbbk[\Bbbk^3\otimes\Bbbk^2\otimes\Bbbk^2]^{U_3\times U_2\times U_2}. \] We construct an ordinary cluster family with Markov principal part. At , the intersection of i…

math.AG2026

Euler Characteristics of Generic Quiver Grassmannians: Semi-Invariants and Localization

Jiarui Fei

We study the topological Euler characteristic of the quiver Grassmannian for a generic representation. We give a Chern class formula and a finite torus-localization formula. If the…

math.RT2025

On the Orthogonal Projections

Jiarui Fei

For any rigid presentation , we construct an orthogonal projection functor to left adjoint to the natural embedding. We establish a bijection between presen…