Presented by: Michel de Lara, École des Ponts ParisTech and Université Paris-Est

Climate change and biodiversity loss are topics that challenge decision-making Indeed, by their spatial globality, by their long time span and by the risk they carry, we are compelled, when we compare policies, to aggregate within generations, over time and over uncertainties.

Economic analysis addresses risk and long-term issues with discounted expected utility (DEU), focusing on optimality. Viability theory is rooted in satisfying sustainability constraints over time, focusing on feasibility. Inspired by Stern's comments, we propose to give formal garbs to the "stewardship" notion that "particular aspects of the world are passed on in a state at least as good as that inherited from the previous generation". 

We present the Stochastic Stewardship Criterion and show that it shares, with DEU, a time consistency property.

About Maths Colloquium

The Mathematics Colloquium is directed at students and academics working in the fields of pure and applied mathematics, and statistics. 

We aim to present expository lectures that appeal to our wide audience.

Information for speakers

Information for speakers

Maths colloquia are usually held on Mondays, from 2pm to 3pm, in various locations at St Lucia.

Presentations are 50 minutes, plus five minutes for questions and discussion.

Available facilities include:

  • computer 
  • data projector
  • chalkboard or whiteboard

To avoid technical difficulties on the day, please contact us in advance of your presentation to discuss your requirements.


Mansergh Shaw building (45)

Other upcoming sessions