Mathematically, the motion of a fluid is described by the so-called Navier-Stokes equations. In the spirit of Newtonian mechanics, these equations should determine the future motion of the fluid out of its initial state.
The aim of this article is to highlight some previous challenges that were also a stimulus to finding proof for some interesting results. With this pretext, we present three moments in the history of mathematics that were important for the development of new lines of research.
Each domain of knowledge has its own language, content and method. They give it character, and whenever a field of knowledge advances, it is thanks to one of them. Language is very important for science, but is not necessarily a priority. Old language can lead
[caption id="attachment_44023" align="alignleft" width="320"] Illustration: Anna Sanchis[/caption]
When we were little, we knew the following by heart: A metre is the distance between two lines marked on a bar of platinum and iridium kept in the Museum of Weights and Measures of Paris.» And we added: