- Tytuł:
- Upper bounds for the extended energy of graphs and some extended equienergetic graphs
- Autorzy:
-
Adiga, C.
Rakshith, B. R. - Powiązania:
- https://bibliotekanauki.pl/articles/1397877.pdf
- Data publikacji:
- 2018
- Wydawca:
- Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
- Tematy:
-
energy of a graph
extended energy of a graph
extended equienergetic graphs - Opis:
- In this paper, we give two upper bounds for the extended energy of a graph one in terms of ordinary energy, maximum degree and minimum degree of a graph, and another bound in terms of forgotten index, inverse degree sum, order of a graph and minimum degree of a graph which improves an upper bound of Das et al. from [On spectral radius and energy of extended adjacency matrix of graphs, Appl. Math. Comput. 296 (2017), 116-123]. We present a pair of extended equienergetic graphs on n vertices for [formula] starting with a pair of extended equienergetic non regular graphs on 8 vertices and also we construct a pair of extended equienergetic graphs on n vertices for all $ n \geq 9 $ starting with a pair of equienergetic regular graphs on 9 vertices.
- Źródło:
-
Opuscula Mathematica; 2018, 38, 1; 5-13
1232-9274
2300-6919 - Pojawia się w:
- Opuscula Mathematica
- Dostawca treści:
- Biblioteka Nauki
Artykuł