| Subject | English | Catalan |
| math. | integer programming | programació entera |
| math. | linear programming | programació lineal |
| environ. | Planning-Programming-Budgeting System A system to achieve long-term goals or objectives by means of analysis and evaluation of the alternatives. PPB is designed to solve problems by finding the most effective and most efficient solution on the basis of objective criteria | sistema de planificació-programació-pressupost |