Detalhes bibliográficos
| Ano de defesa: |
2019 |
| Autor(a) principal: |
Nascimento, Julliano Rosa
 |
| Orientador(a): |
Castonguay, Diane
|
| Banca de defesa: |
Castonguay, Diane,
Coelho, Erika Morais Martins,
Protti, Fábio,
Szwarcfiter, Jayme Luiz,
Pinto, Leizer de Lima |
| Tipo de documento: |
Tese
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de Goiás
|
| Programa de Pós-Graduação: |
Programa de Pós-graduação em Ciência da Computação (INF)
|
| Departamento: |
Instituto de Informática - INF (RG)
|
| País: |
Brasil
|
| Palavras-chave em Português: |
|
| Palavras-chave em Inglês: |
|
| Área do conhecimento CNPq: |
|
| Link de acesso: |
http://repositorio.bc.ufg.br/tede/handle/tede/10180
|
Resumo: |
In this work, we introduce the PARTITION INTO COMPLEMENTARY SUBGRAPHS (COMP-SUB(Pi)) problem, which receives as input a graph H and an edge set property Pi, and the goal is determining whether is possible to decompose the graph H into complementary subgraphs G and \bar{G} such that the edge set M between G and \bar{G} satisfies property Pi. COMP-SUB(Pi) generalizes the recognition of complementary prisms problem, which is the case when Pi is a perfect matching between corresponding vertices of G and \bar{G}. When Pi is arbitrary, we show results for k-clique or k-independent set free graphs. On property P_\emptyset which considers M =\emptyset, we show that COMP-SUB(P_\emptyset) is GI-complete for chordal graphs, but can be solved efficiently for permutation, comparability, co- comparability and co-interval graphs. Furthermore, we obtain characterizations for some subclasses of chordal graphs. We also obtain results for Pi_{Kn,n} , the case when M has all the possible edges between G and \bar{G} and for Pi_{PERF}, the case which considers M as a perfect matching. In particular, we show that COMP-SUB(Pi_{PERF}) problem is GI-hard, and we obtain characterizations for this problem when the input graph H is a cograph, a chordal or a distance-hereditary graph. On the other hand, we address three parameters of the geodetic convexity for complementary prisms: the hull number, the geodetic number and the convexity number. We obtain results on the hull number for complementary prisms G\bar{G} when both G e \bar{G} are connected. On the second and third parameter, we show that the decision problems related to the geodetic number and convexity number are NP-complete even restricted to complementary prisms. We also establish lower bounds on the geodetic number for G\bar{G} when G or \bar{G} have simplicial vertices and we determine the convexity number for G\bar{G} when G is disconnected, or G is a cograph. |
