Abstract
In this paper, we characterize two power indices introduced in [Citation1] using two different modifications of the monotonicity property first stated by [Citation2]. The sets of properties are easily comparable among them and with previous characterizations of other power indices.
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Acknowledgments
A. A. Pinto acknowledges the financial support of LIAAD INESC TEC through program PEst, USP-UP project, Faculty of Sciences, University of Porto, Calouste Gulbenkian Foundation, FEDER, POCI 2010 and COMPETE Programmes, PTDC/MAT/121107/2010 and Fundação para a Ciência e a Tecnologia (FCT).J. M. Alonso-Meijide and M. Álvarez-Mozos acknowledge the financial support of the Spanish Ministry of Economy and Competitiveness through Projects ECO2008-03484-C02-02/ECO and MTM2011-27731-C03-03 and of Xunta de Galicia through Project INCITE09-207-064-PR. The authors would also like to thank the comments and suggestions of two anonymous referees.