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20082026
most citedZeta Functions of Complexes Arising from PGL(3)

4 citations · 12 across the 18 of their papers we have counts for

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6 papers · 1 filter

math.CO2026

Quadratic-Defect Completions of Spherical -Design Orbits

Kuan-Cheng Chien, Ming-Hsuan Kang

We study how spherical -designs arising from finite group orbits can be completed to spherical -designs by adjoining further orbits, allowing weights in the general theory. F…

math.CO2026

Ramanujan Cayley Graphs with Normal Connection Sets in Ratio-One Frobenius Groups

Ming-Hsuan Kang, Chi-Jung Yang

Let be a finite Frobenius group with and . We classify all Ramanujan Cayley graphs of whose connection sets are normal, in the sense of being un…

math.CO2026

A solution to Butler's positivity conjecture

Peter L. Guo, Mingyang Kang, Rui Xiong

Let be distinct partitions such that and . We prove Butler's positivity conjecture posed in 1994: the expansion of the Macdonald intersecti…

math.CO2026

A Lam--Postnikov--Pylyavskyy inequality for hybrid Grothendieck polynomials

Peter L. Guo, Mingyang Kang, Jiaji Liu

We prove a multivariate Lam--Postnikov--Pylyavskyy type inequality for hybrid Grothendieck polynomials, unifying and refining results for stable and dual stable Grothendieck polyno…

math.CO2025

Spherical 2-Designs from Finite Group Orbits

Kuan-Cheng Chien, Ming-Hsuan Kang

We classify all spherical 2-designs that arise as orbits of finite group actions on real inner product spaces. Although it is well known that such designs can occur in representati…

math.CO2025

Hybrid Grothendieck polynomials

Peter L. Guo, Mingyang Kang, Jiaji Liu

For a skew shape , we define the hybrid Grothendieck polynomial $${G}_{λ/μ}(\textbf{x};\textbf{t};\textbf{w}) =\sum_{T\in \mathrm{SVRPP}(λ/μ)} \textbf{x}^{\mathrm{ircont}(T)}\…