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From the 1 of 7 linked papers with an AI index.

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7 papers

math.CO2026

Superlinear Lower Bounds for Monochromatic Path Partitions

Heng Li, Lanchao Wang

In 1989, Gyárfás conjectured that the vertex set of every -edge-coloured complete graph can be partitioned into at most vertex-disjoint monochromatic paths. Erdős, Gyárfás,…

math.CO2026

Prescribed-order subdigraphs with large minimum out-degree

Bin Chen, Lanchao Wang

Alon introduced as the largest integer such that every digraph on vertices with minimum out-degree at least contains a subdigraph on vertices with minimum o…

math.CO2026

The Turán number of the Cartesian product of trees via star-flip

Lanchao Wang, Caihong Yang

The paper proves a conjecture that the Turán number of the Cartesian product of any two nontrivial trees grows on the order of n^{3/2}, introduces r‑star‑flip graphs, and shows the…

math.CO2026

Tight Staircase Bounds for Cyclic Subsets below Dirac's Threshold

Hong Liu, Mengyuan Niu, Lanchao Wang +1

Let denote the number of cyclic subsets in a graph , which are subsets that induce a Hamiltonian subgraph. Draganić, Keevash and Müyesser recently prov…

math.CO2026

An exact robust Ramsey theorem for matchings

Mengyuan Niu, Lanchao Wang

Keevash and Michaeli recently proved that, under the robustness assumption that \(G\) is an \(s\)-connector (i.e. \(\overline G\) is \(K_{s,s}\)-free), \(G\) has essentially the sa…

math.CO2026

Constructor--Blocker games forbidding even cycles

Lanchao Wang, Zhifei Yan

The Constructor--Blocker game is played on the edge set of . Two players alternately claim previously unclaimed edges. Constructor aims to maximize the number of copies of a t…