Ha Hoang Pham

activity

20132022

most citedModified defect relations of the Gauss map of complete minimal surfaces on annular ends

1 citations · 2 across the 7 of their papers we have counts for

collaborators

Showing math.COShow all

2 papers · 1 filter

math.CO2022

Spanning trees with at most $5$ leaves and branch vertices in total of $K_{1, 5}$ -free graphs

Pham Hoang Ha, Nguyen Hoang Trang

In this paper, we prove that every $n$ -vertex connected $K_{1, 5}$ -free graph $G$ with $σ_{4} (G) \geq n - 1$ contains a spanning tree with at most $5$ leaves and branch vertices in total…

math.CO2021

Spanning trees of a claw-free graph whose reducible stems have few leaves

Pham Hoang Ha

Let $T$ be a tree, a vertex of degree one is a leaf of $T$ and a vertex of degree at least three is a branch vertex of $T$ . For two distinct vertices $u, v$ of $T$ , let $P_{T} [u, v]$ d…

Spanning trees with at most 5 leaves and branch vertices in total of K1,5​-free graphs

Spanning trees of a claw-free graph whose reducible stems have few leaves

Spanning trees with at most $5$ leaves and branch vertices in total of $K_{1, 5}$ -free graphs