Convexity of hesitant fuzzy sets based on aggregation functions

Authors would like to thank for the support of the grant no. 1/0150/21 provided by Slovak grant agency VEGA (V. Janis), Spanish Ministry of Science and Technology project TIN-2017-87600-P (P. Alonso), Spanish Ministry of Science and Technology project PGC2018- 098623-B-I00 (P. Huidobro and S. Montes) and FICYT Project IDI/2018/000176 (P. Alonso, P. Huidobro and S. Montes).