Per-spectral and adjacency spectral characterizations of a complete graph removing six edges
Per-spectral and adjacency spectral characterizations of a complete graph removing six edges
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移除六个边的完整图的每光谱和邻接光谱表征
DOI:
10.1016/j.dam.2015.09.014
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发表时间:
2016-04
影响因子:
1.1
通讯作者:
Zhang Heping
中科院分区:
文献类型:
--
作者:
Wu Tingzeng;Zhang Heping
Cámara and Haemers (2014) investigated when a complete graph with some edges deleted is determined by its adjacency spectrum (DAS for short). They claimed: for any m≥ 6 and every large enough n one can obtain graphs which are not DAS by removing m edges from a complete graph K n. Let G n denote the set of all graphs obtained from a complete graph K n by deleting six edges. In this paper, we show that all graphs in G n are uniquely determined by their permanental spectra. However, we show that for each n≥ 7 or n= 5 there is just one pair of nonisomorphic cospectral graphs in G n, and for n= 4 or 6 all graphs in G n are DAS.
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影响因子:
1.1
作者:
Shunyi Liu;Heping Zhang
通讯作者:
Shunyi Liu;Heping Zhang
影响因子:
1.8
作者:
H. Günthard;H. Primas
通讯作者:
H. Günthard;H. Primas
影响因子:
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作者:
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DOI:
10.1201/b16132-66
发表时间:
2013-12
期刊:
--
影响因子:
--
作者:
Ernesto Estrada;D. Bonchev
通讯作者:
Ernesto Estrada;D. Bonchev
DOI:
--
发表时间:
--
期刊:
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影响因子:
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