TY - GEN AU - García Hernández, Josefa María AU - Jara Martínez, Pascual PY - 2023 UR - https://hdl.handle.net/10481/81023 AB - In the fuzzy theory of sets and groups, the use of α-levels is a standard to translate problems from the fuzzy to the crisp framework. Using strong α-levels, it is possible to establish a one to one correspondence which makes possible doubly, a... LA - eng PB - Hindawi TI - Gradual Sets: An Approach to Fuzzy Sets DO - 10.1155/2023/6163672 ER -