Nieto Roig, Juan JoséRodríguez López, Rosana2020-06-062020-06-062005Nieto, J. J., & Rodríguez-López, R. (2005). Existence of extremal solutions for quadratic fuzzy equations. Fixed Point Theory and Applications, 2005(3), 5359191687-1820http://hdl.handle.net/10347/22867Some results on the existence of solution for certain fuzzy equations are revised and extended. In this paper, we establish the existence of a solution for the fuzzy equation , where , , , and are positive fuzzy numbers satisfying certain conditions. To this purpose, we use fixed point theory, applying results such as the well-known fixed point theorem of Tarski, presenting some results regarding the existence of extremal solutions to the above equation.engCopyright © 2005 Hindawi Publishing Corporationjournal article10.1155/FPTA.2005.321open access