On seed graphs with more than two components

Research output: Contribution to journalArticlepeer-review


The closed neighbourhood NG[X] of a vertex x in a graph G is the subgraph of G induced by x and all neighbours of x. The seed of a vertex x ∈ G is the subgraph of G induced by all vertices of G\NG[x] and we denote it by SG(x). A graph F is a seed graph if there exists a graph G such that SG(x) ≅ F for each x ∈ G. In this paper seed graphs with more than two components are studied. It is shown that if all components are of equal order, size or regularity then they are all isomorphic to a complete graph. In the general case it is shown how the structure of any component Fi of a seed graph F depends on the structure of all components 'smaller' than Fi in the sense of 'smaller order', 'smaller size' or 'smaller degree' in the case of regular components.

Original languageEnglish (US)
Pages (from-to)115-126
Number of pages12
JournalDiscrete Mathematics
Issue number1-3
StatePublished - Apr 28 2001

Bibliographical note

Funding Information:
This work was in part supported by GACR" Grant No. 201=98=1451. ∗Tel.: +420-69-699-3496; fax: +420-69-691-9597. E-mail address: dalibor.froncek@vsb.cz (D. Fronc"ek).


  • Isomorphic survivor graphs
  • Local properties of graphs
  • Seed graphs


Dive into the research topics of 'On seed graphs with more than two components'. Together they form a unique fingerprint.

Cite this