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.
Some examples of mathematical models are as depicted below: 1  Population growth: A more practical and widely used population growth model is the logistic function, and its extensions. 2  Neighbor-sensing model: This model explains the mushroom formation from the initially chaotic fungal network.