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.
Go here... Modeling: a model definition. A computer model, as used in modeling and simulation science, is a mathematical representation of somethingâa person, a building, a vehicle, a treeâany object. A model also can be a representation of a processâa weather pattern, traffic flow, air flowing over a wing.