Reza Ghanbari - Faculty of Mathematical Sciences, Fersdowsi University of Technology, Mashhad, Iran
Khatere Ghorbani-Moghadam - Faculty of Mathematical Sciences, Fersdowsi University of Technology, Mashhad, Iran
Nezam Mahdavi-Amiri - Faculty of Mathematical Sciences, Sharif University of Technology, Tehran, Iran

We classify some important types of fuzzy linear programming problems based on the models or the solution methods. First, review fuzzy linear programming problems with fuzzy decision variables and associated duality problems. Then, we explore fuzzy linear programming problems with fuzzy parameters (fuzzy numbers in the definition of objective function or constraints). Finally, we review fully fuzzy linear programming problems, when all variables and parameters may be fuzzy

Fuzzy linear programming; Duality; Ranking function; Fuzzy number