You are on the website of the 'MathsInTerre' research Thinktank. The project was launched in January 2013 for one year with the aim of making a contribution to the subject “Mathematics and the complexity of the Earth system”. For one year, it was a question of providing input for analyses and debates in the scientific communities concerned by the issues associated with the rapprochement of mathematics and the Earth sciences (economy, ecology, geology, ...).

Our work emphasizes strong needs and challenges, sometimes hidden behind the trends. We also revealed the necessity to adapt the tools for financing the research covering the "Mathematics & Earth system" theme.

We worked in collaboration with a wide consortium of researchers including mathematicians and scientists who were not from the mathematics community. Here are the results of their reflection, that could not be lead without our numerous partnerships.

## What does a mathematician do?During our discussions with non-mathematician communities, questions were often raised about mathematics that at first appeared naïve. Here, we would like to remind readers what mathematics is and what it does, basing our observations on the important work of learned societies and the initiative entitled “Mathematics of Planet Earth 2013”. |
## Mathematics in the real worldActing as an aid to understanding, forecasting or decision-making, mathematics is like a very practical toolbox. However, it does have some shortcomings: a few mis- or poorly-understood tools lie at the bottom of the box, some are still new because they are unusable, while others still have to be invented. It is therefore important to take particular care in maintaining the links between the real world, theory and computational science. Read more → |

## Emerging mathematicsNew environmental and societal issues call for a better understanding of numerous complex and highly heterogeneous behaviour patterns. Inspired by these challenges, mathematicians are formalising new questions and attempting to provide answers (see Mathematics in the Real World) by digging deep into their mathematical culture. These answers sometimes require the development of new mathematics. |
## Numerical mathematicsNumerical mathematics maintains close links with theory. Going from one to the other is a daily sport for some mathematicians. Such mathematicians often focus on problems arising from applications: coupling of processes, model validation, parameterizations, high-performance computing (supercomputing) ... Forming a bridge between the abstract and the concrete, numerical mathematics has difficulties in finding its place in the world of research in France. |

and with the support of the Fédération de Recherche en Mathématiques Rhône-Alpes-Auvergne