An introduction to coding theory of flow equations in ecological models

The modelling of dynamic systems depends on the solution of a differential equation system. Some problems appear because we do not know the mathematic al expressions of the said equations. This problem is common to the modelli ng of the socio-economic structural systems. Enough numerical data of the s ystem variables are known. The authors have used a methodology and have developed a language which was explained in other papers (Uso et all [4], Villacampa et all [6]). The aut hors, going on with their research-line, think that it is very important to establish a code between the different languages to let them codify and de codify information. Coding permits us to reduce the study of some objects t o others. The mathematical expressions, which model some system variables, are complex, so it is advisable to define a code alphabet, which can establ ish the correspondence between the equations and alphabet words, what will lead us to best manipulation of the said equations. In this paper the authors begin with the introduction to the coding and dec oding of complex structural system modelling. In the first place the author s start with a code between two languages to carry them through in order to obtain the simple expression of a mathematical equation with models a syst em variable that can be decodified from a further manipulation.