Volume 18 (2026) – In Progress

Research Articles

Modified Total Sigma-Irregularity in Chemical Graphs
Darko Dimitrov, Slobodan Filipovski, Martin Knor, Riste Škrekovski
Pages:   1–7    |   DOI: 10.47443/dml.2026.041

Hitting-Time Index of Trees: Bounds, Relationships, and Exact Formulas
Jinxia Liang, Mengya He, Bingde Xing, Yaping Mao, Boris Furtula
Pages:  8–15   |   DOI: 10.47443/dml.2026.074

Short Proofs of Three Combinatorial Results in the Johnson Scheme
Danila Cherkashin, Yakov Shubin
Pages: 16–20   |   DOI: 10.47443/dml.2026.157

Nonexistence of Almost Moore Digraphs with Self-Repeats of Diameter Greater Than Two
Arnau Messegué, Josep M. Miret
Pages: 21–27   |   DOI: 10.47443/dml.2026.154

Reservoirs in Permutations
Aubrey Blecher, Arnold Knopfmacher
Pages: 28–33   |   DOI: 10.47443/dml.2026.111

Corrigendum

Corrigendum to “Improved Bounds on the Domatic Numbers of Queens Graphs” [Discrete Math. Lett. 16 (2025) 94-99]
Juho Lauri
Pages: 34–35   |   DOI: 10.47443/dml.2026.195

Research Articles

Generalizations of a Sum Rule for Derangements
Mark Shattuck
Pages: 36–42   |   DOI: 10.47443/dml.2026.087

A Bijection Between Edges of the Turán Graph and Irreducible Elements in the Dominance Order Lattice
Nathanaël Hassler
Pages: 43–50   |   DOI: 10.47443/dml.2026.050

On a Quadratic Relation Between Stanley–Wilf Limits and Füredi–Hajnal Limits
Mohamed Omar
Pages: 51–54   |   DOI: 10.47443/dml.2026.084

Graphs with Small Triameters
Sergiy Kozerenko
Pages: 55–62   |   DOI: 10.47443/dml.2026.127

Locally Even and Locally Odd Edge 2-Colorings of Pseudographs
Július Czap
Pages: 63–68   |   DOI: 10.47443/dml.2026.153

New Combinatorial Identities Associated with Sun’s Identity
Necdet Batır
Pages: 69–76   |   DOI: 10.47443/dml.2026.140

A Note on Directed Clique Token Sliding
Duc A. Hoang
Pages: 77–84   |   DOI: 10.47443/dml.2026.159