ON NON-BIPARTITE GRAPHS WITH INTEGRAL SIGNLESS LAPLACIAN EIGENVALUES AT MOST 6

Semin Oh; Jeong Rye Park; Jongyook Park; Yoshio Sano

doi:10.4134/BKMS.b250147

ON NON-BIPARTITE GRAPHS WITH INTEGRAL SIGNLESS LAPLACIAN EIGENVALUES AT MOST 6

Semin Oh
, Jeong Rye Park
, Jongyook Park
, Yoshio Sano

Kyungpook National University
Gwangju Institute of Science and Technology
University of Tsukuba

Research output: Contribution to journal › Article › peer-review

Abstract

In this paper, we completely classify the connected nonbipartite graphs with integral signless Laplacian eigenvalues at most 6.

Original language	English
Pages (from-to)	649-665
Number of pages	17
Journal	Bulletin of the Korean Mathematical Society
Volume	63
Issue number	2
DOIs	https://doi.org/10.4134/BKMS.b250147
State	Published - Mar 2026

Keywords

Graph spectrum
integral graph
non-bipartite graph
Q-integral graph
signless Laplacian
spectral radius

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10.4134/BKMS.b250147

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title = "ON NON-BIPARTITE GRAPHS WITH INTEGRAL SIGNLESS LAPLACIAN EIGENVALUES AT MOST 6",

abstract = "In this paper, we completely classify the connected nonbipartite graphs with integral signless Laplacian eigenvalues at most 6.",

keywords = "Graph spectrum, integral graph, non-bipartite graph, Q-integral graph, signless Laplacian, spectral radius",

author = "Semin Oh and Park, \{Jeong Rye\} and Jongyook Park and Yoshio Sano",

note = "Publisher Copyright: {\textcopyright} 2026 Korean Mathematical Society.",

year = "2026",

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doi = "10.4134/BKMS.b250147",

language = "English",

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AU - Oh, Semin

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AU - Sano, Yoshio

PY - 2026/3

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N2 - In this paper, we completely classify the connected nonbipartite graphs with integral signless Laplacian eigenvalues at most 6.

AB - In this paper, we completely classify the connected nonbipartite graphs with integral signless Laplacian eigenvalues at most 6.

KW - Graph spectrum

KW - integral graph

KW - non-bipartite graph

KW - Q-integral graph

KW - signless Laplacian

KW - spectral radius

UR - https://www.scopus.com/pages/publications/105035216202

U2 - 10.4134/BKMS.b250147

DO - 10.4134/BKMS.b250147

M3 - Article

AN - SCOPUS:105035216202

SN - 1015-8634

VL - 63

SP - 649

EP - 665

JO - Bulletin of the Korean Mathematical Society

JF - Bulletin of the Korean Mathematical Society

IS - 2

ER -

ON NON-BIPARTITE GRAPHS WITH INTEGRAL SIGNLESS LAPLACIAN EIGENVALUES AT MOST 6

Abstract

Keywords

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