Some of the fundamental properties of the graphs with two kinds of elements, red and black, are studied. An interesting property of a discrete function representing the number of trees with n red element as n varies over the possible range is discussed. Procedures are given by means of which one can
✦ LIBER ✦
Some kinds of energies of graphs
✍ Scribed by Mirko Lepović
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 336 KB
- Volume
- 128
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
✦ Synopsis
TorgaSev (1986) described all finite connected graphs whose energy (i.e. the sum of all positive eigenvalues including also their multiplicities), does not exceed 3. In this paper, we introduce definitions of some other kinds of energies and we prove some properties of them.
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