## Choudum, S.A., On forcibly connected graphic sequences, Discrete Mathematics 96 (1991) 175-W. A few sufficient conditions for a graphic sequence to be forcibly connected are obtained.
On forcibly hereditary p-graphical sequences
β Scribed by A.A Chernyak; Zh.A Chernyak; R.I Tyshkevich
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 986 KB
- Volume
- 64
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
Characterizations of forcibly Chordal, forcibly strongly chordal, forcibly interval and forcibly trivially perfect graphical sequences are given.
On forcibly hereditary P-graphical sequences 113 Characterizations of forcibly P:graphical se/tuences for hereditary properties P which are major types of chordal graphs are obtained in this article; namely, P is one of these four properties: (/'1) chordality, (/'2) strong chordality, (/'3) trivial perfectness, (/'4) intervality. The complexity of testing is equal to
π SIMILAR VOLUMES
In this paper we give a necessary condition for a sequence n of integers to be 3-hypergraphic. This necessary condition is on the lines of Erdiis and Gallai conditions for graphic sequences and depends on a function M, defined on n.
In this work it is shown that the E&x nonmaxir:lal sequences, 5S555555555553 755555555555555555 (more briefly 5133' 7'5") are not pl-nar graphical, partly proving an unresolved conjecture by Schmeichel and Hakimi.
## Abstract A novel coronavirus has been identified as the cause of the outbreak of severe acute respiratory syndrome (SARS). Previous phylogenetic analyses based on sequence alignments show that SARSβCoVs form a new group distantly related to the other three groups of previously characterized coro
## Abstract A (twoβdimensional) 2D graphical representation of protein sequences based on six physicochemical properties of amino acids is outlined. The numerical characterization of protein graphs is given as descriptors of protein sequences. It is not only useful for comparative study of proteins