The term or idea of ​​structure can be traced over a long series of meanings, although rather imprecise, even back to the Greek classics. The vagueness could be readily associated with the fact that this term, this idea, has appeared at very diverse points in the cultural spectrum. From linguistics to mathematics, from biology to history, everyone at one time or another made some use of the idea of ​​structure. However, only during the 19th century did very evident traces appear of the use of the concept in the field of social sciences.