TY  - GEN 
AU  - Mojdeh, Doost Ali
AU  - Samadi, Babak
AU  - González Yero, Ismael
A4  - Matemáticas
PY  - 2020
SN  - 0399-0559
SN  - 1290-3868 (internet)
UR  - http://hdl.handle.net/10498/23256
AB  - In this paper we define the global defensive k-alliance (number) in a digraph D, and give several bounds on this parameter with characterizations of all digraphs attaining the bounds. In particular, for the case k = -1, we give a lower (an upper)...
LA  - eng
PB  - EDP SCIENCES S A
KW  - Global defensive k-alliance number; dominating set; k-order-sum number; rooted tree; directed tree
KW  - Global defensive k-alliance number
KW  - dominating set
KW  - k-order-sum number
KW  - rooted tree
KW  - directed tree
TI  - Global defensive k-alliances in directed graphs: combinatorial and computational issues
DO  - 10.1051/ro/2019049
ER  -