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On Graphs with Small Number of Edges Having ExtremalNumber of Open Triangles Full article

Journal Journal of Applied and Industrial Mathematics
ISSN: 1990-4789 , E-ISSN: 1990-4797
Output data Year: 2025, Volume: 19, Number: 2, Pages: 313-321 Pages count : 9 DOI: 10.1134/s1990478925020103
Tags open triangle, induced subgraph, sparse graph
Authors Pyatkin A.V. 1
Affiliations
1 Sobolev Institute of Mathematics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

Funding (1)

1 Sobolev Institute of Mathematics FWNF-2022-0019

Abstract: In an undirected graph, a 3-vertex induced subgraph having exactly 2 edges is called an open triangle (OT). We consider the class of graphs where the difference between the numbers of edges and vertices is a fixed constant c. The complete characterization of graphs on at least c + 7 vertices with the maximum number of OTs is obtained for this class.
Cite: Pyatkin A.V.
On Graphs with Small Number of Edges Having ExtremalNumber of Open Triangles
Journal of Applied and Industrial Mathematics. 2025. V.19. N2. P.313-321. DOI: 10.1134/s1990478925020103 Scopus РИНЦ OpenAlex
Original: Пяткин А.В.
Об экстремальных по числу открытых треугольников графах с малым числом рёбер
Дискретный анализ и исследование операций. 2025. Т.32. №2. С.107-121. DOI: 10.33048/daio.2025.32.830 РИНЦ
Dates:
Submitted: Mar 19, 2025
Accepted: Apr 22, 2025
Published print: Apr 1, 2026
Published online: Apr 1, 2026
Identifiers:
≡ Scopus: 2-s2.0-105035381991
≡ Elibrary: 89161727
≡ OpenAlex: W7147278655
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