(A, ℬ)-kernels and Sands, Sauer and Woodrow’s theorem
Let D = (V(D), A(D)) a digraph. Consider the set PD= {P : P is a non trivial finite directed path in D} and let A and ℬ two subsets of PD. A subset N of V(D) is said to be an (A, ℬ)-kernel of D if (1) for every subset {u, v} of N there exists no uv-directed path P such that P∈A(N is A-independent) a...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
Taylor & Francis Group
2019-12-01
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Series: | AKCE International Journal of Graphs and Combinatorics |
Online Access: | http://www.sciencedirect.com/science/article/pii/S0972860017301366 |