In existing references, authors and companies have defined the maintenance variables over time; it is found that in some cases there are traditions, incorrect postulates or the inappropriate use of terminology, which leads to a misinterpretation of the results when maintenance management is analyzed. Starting from a documentary and deductive methodology, in this article, the analysis of some authors is presented and, from its origin, the initial variables that allow the construction of adequate

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... algorithms for the maintenance function and to obtain the correct information related to it are re-defined. In a simple way with mathematical models, to then apply statistical models which allows, subsequently, calculating the maintenance information and achieving that professionals, professors and students are incorporated into maintenance analysis processes with a higher cognitive level, producing continuous information and comprehensive to analyze and investigate industrial equipment based on a basic history.