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.
The word mÃ¡thÄma is derived from Î¼Î±Î½Î¸Î¬Î½Ï (manthano), while the modern Greek equivalent is Î¼Î±Î¸Î±Î¯Î½Ï (mathaino), both of which mean to learn. In Greece, the word for mathematics came to have the narrower and more technical meaning mathematical study even in Classical times.