RT Journal Article T1 A generalization of obligation rules for minimum cost spanning tree problems A1 Bergantiño Cid, Gustavo A1 Lorenzo Picado, Leticia A1 Lorenzo Freire, Silvia Maria K1 1207.06 Teoría de Juegos AB Tijs et al. [23] introduce the family of obligation rules for minimum cost spanning tree problems. We give a generalization of such family. We prove that our family coincides with the set of rules satisfying an additivity property and a cost monotonicity property. We also provide two new characterizations for the family of obligation rules using the previous properties. In the first one, we add a property of separability; and in the second one, we add core selection. PB European Journal of Operational Research SN 03772217 YR 2011 FD 2011-05-16 LK http://hdl.handle.net/11093/1098 UL http://hdl.handle.net/11093/1098 LA eng NO European Journal of Operational Research, 211(1): 122-129 (2011) NO Ministerio de Ciencia e Innovación | Ref. ECO2008-03484-C02-01-ECON DS Investigo RD 24-sep-2023