Erect means build or upright. If you erect a house, you build it. If you stand erect, you hold your body as tall as possible.
A mathematical model is a description of a system using mathematical concepts and language.The process of building a mathematical model is termed mathematical modeling.Mathematical models are used in the natural sciences (such as physics, biology, earth science, meteorology) and engineering disciplines (e.g. computer science, artificial intelligence). mathematical model is a description of a system using mathematical concepts and language.
mathematical description of an entity or state of affairs. This deï¬nition suggests that modeling is an activity, a cognitive activity in. which we think about and make models to describe how devices or objects. of interest behave. There are many ways in which devices and behaviors can be described. We can use words, drawings or sketches, physical models, computer pro-. grams, or mathematical formulas. In other words, the modeling activity. can be done in several languages, often simultaneously.