**The current state of mathematics research in France reveals a substantial community of researchers working on topics related to the Earth system. However, the links with other disciplines are still insufficient for a science related to the Earth that should be tending towards the development of a continuum, where there are no barriers between disciplines or within mathematics itself. We therefore propose some tools for financing research that are aimed at encouraging interaction and for which one of the essential selection criteria is the scientific quality of the mathematics questions addressed.**

Given the action plan drawn up by the ANR, it is essential to have an important transverse axis, which we will call the “**Mathematics of Planet Earth**” (**MPE axis**), covering fundamental and applied research. This axis will have three objectives:

The sub-axis ** Foundations of computational science** of the

Alliances, institutes and universities are often divided internally on the basis of the topics studied, and fundamental research is at pains to find its place. Such a place, however, is essential.