Minimal complete matchings and negative cycles
β Scribed by R. L. Tobin
- Publisher
- John Wiley and Sons
- Year
- 1975
- Tongue
- English
- Weight
- 627 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0028-3045
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
Conditions are developed which relate the existence of negative and nonpositive simple cycles in an undirected network to minimal complete matchings on a derived network. These conditions are then used to develop a test to determine whether or not an undirected network contains nonpositive simple cycles. Also, it is shown that, in certain cases, the solution to the matching problem gives information about the location of the nonpositive cycles.
π SIMILAR VOLUMES
In this paper the problem of characterizing extremal graphs K n relatively to the number of negative p -cycles , when the number of negative edges is fixed , is solved for large n . This number can be expressed as an alternating sum for which the Bonferroni inequalities hold . Finally , the asympto
## Abstract Let __M__ be a matching in a graph __G__ such that __d__(x) + __d__(y) β₯ |__G__| for all pairs of independent vertices x and y of G that are incident with __M.__ We determine a necessary and sufficient condition for __M__ to be contained in a cycle of __G.__ This extends results of HΓ€gg
Let k be a fixed positive integer. A graph H has property Mk if it contains [Β½k] edge disjoint hamilton cycles plus a further edge disjoint matching which leaves at most one vertex isolated, if k is odd. Let p = c/n, where c is a large enough constant. We show that G,,p a.s. contains a vertex induce