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.
Modeling and simulation (M&S) refers to using models â physical, mathematical, or otherwise logical representation of a system, entity, phenomenon, or process â as a basis for simulations â methods for implementing a model (either statically or) over time â to develop data as a basis for managerial or technical decision making.