Lan Ma

collaborators

2 papers

math.CO2026

Prime Certificates for Exact Vertex-Coprime Ramsey Numbers

Zhicheng Du, Wenji Xi, Zhuo Deng +1

Let $G_{n}$ be the coprime graph on ${1, \dots, n}$ . We prove that the mixed vertex-coloring coprime Ramsey number satisfies \[ \Rcop(k_1,\ldots,k_c)=p_{\sum_{i=1}^c(k_i-1)}, \] whe…

cs.IT2025

Generic Construction of Optimal-Access Binary MDS Array Codes with Smaller Sub-packetization

Lan Ma, Qifu Tyler Sun, Shaoteng Liu +1

A $(k + r, k, l)$ binary array code of length $k + r$ , dimension $k$ , and sub-packetization $l$ is composed of $l \times (k + r)$ matrices over $F_{2}$ , with every column of the matri…