activity
20042026
most citedParameterized complexity of fair deletion problems

12 citations · 22 across the 32 of their papers we have counts for

collaborators

35 papers

math.CO2026

Zero-Run Spectra of the Raney numbers Modulo Primes

Sen-Peng Eu, Zai-Ting Huang, Louis Kao

We study the zero-run structure of the -Raney numbers modulo a prime . For every prime , we determine the left-to-right maxima of the zero-run lengths, the complete ze…

math.CO2026

Richardson tableaux and Motzkin paths

Sen-Peng Eu, Tung-Shan Fu, Yi-Hao Kao +1

Richardson tableaux were introduced by Karp and Precup in their study of irreducible components of Springer fibers that are Richardson varieties. Guo gave an explicit bijection bet…

math.CO2026

Rowmotion on hook and two-row alt -Tamari lattices

Sen-Peng Eu, Vei-Cheng Hioe, Yi-Lin Lee

In 2024, Ceballos and Chenevi{è}re introduced alt -Tamari lattices, parameterized by a lattice path and an increment vector , as a common generalization of -Tamari and…

math.RA2025

A Note on Idempotent Matrices: The Poset Structure and The Construction

Sen-Peng Eu, Yong-Siang Lin, Wei-Liang Sun

Idempotent elements play a fundamental role in ring theory, as they encode significant information about the underlying algebraic structure. In this paper, we study idempotent matr…

math.CO2025

Enumeration of pattern-avoiding -matrices and their symmetry classes

Sen-Peng Eu, Yi-Lin Lee

Recently, Brualdi and Cao studied -avoiding -matrices by decomposing them into zigzag paths and proved that the maximum number of 's in such a matrix is given by an…

math.CO2025

Meanders and Dyck-Path Billiards

Sen-Peng Eu, Tung-Shan Fu, Hsiang-Chun Hsu

We study a statistic on the ordered pairs of Dyck paths of size , which counts the number of billiard trajectories in the grid polygon enclosed by an…