Yanyan Song

activity

20242026

collaborators

3 papers

math.CO2026

Close Divisors of Typical Integers:The Ford--Green--Koukoulopoulos Conjecture

Yaping Mao, Yanyan Song

For an integer $k \geq 2$ , let $α_{k}$ be the supremum of the real numbers $a$ for which almost every integer $n \geq 2$ has divisors $d_{1} < \dots < d_{k} ∣ n$ satisfying $d_k\leq d_1\bigl(…

math.CO2025

On the size edge-ordered Ramsey numbers of graphs

Yanyan Song, Yaping Mao

For edge-ordered graphs $G^{≺}$ and $H^{≺}$ , the size edge-ordered Ramsey number $r^_{edge} (G^{≺}, H^{≺})$ is defined as the smallest integer $m$ for wh…

math.CO2024

On some path-critical Ramsey numbers

Ye Wang, Yanyan Song

For graphs $G$ and $H$ , the Ramsey number $R (G, H)$ is the smallest $r$ such that any red-blue edge coloring of $K_{r}$ contains a red $G$ or a blue $H$ . The path-critical Ramsey numb…