Abstract
Let 1 ≤ a < b be integers and G a graph of order n sufficiently large for a and b. Then G has an [ a, b ]-factor if the minimum degree is at least a and every pair of vertices distance two apart has cardinality of the neighborhood union at least an / ( a + b ). This lower bound is sharp. As a consequence, we have a Fan-type condition for a graph to have an [ a, b ]-factor.
Original language | English |
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Pages (from-to) | 688-693 |
Number of pages | 6 |
Journal | Discrete Mathematics |
Volume | 306 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2006 Apr 28 |
Externally published | Yes |
Keywords
- Factor
- Fan-type
- Graph
- Neighborhood union
- [ a, b ]-factor
ASJC Scopus subject areas
- Theoretical Computer Science
- Discrete Mathematics and Combinatorics