Abstract: Planet Earth is a complex system, where various worlds (physical, biological, human) and various scales (in time and space) interact. It has been in equilibrium for the past 10,000 years, but in the last 100 years, developed and developing countries have conducted a real-life experiment by injecting in the atmosphere increasing quantities of carbon dioxide and other greenhouse gases. How does a complex system respond to such a continuous change in internal conditions ? It is an old problem, which has been investigated by famous mathematicians, from Leonard Euler (1707-1783) to René Thom (1923-2002). In this talk, I will survey the various possibilities and apply them to climate change
Biographical Sketch: Ivar Ekeland (Université Paris-Dauphine)
Ivar Ekeland has taught mathematics, economics and finance at the University of Paris-Dauphine and the University of British Columbia. His present research interests are directed to the prevention and mitigation of climate change. He is a fellow of the Royal Society of Canada and the Academia Europea, and a foreign member of the Academies of Science of Norway, Palestine and Austria. He was the President of the University of Paris-Dauphine from 1989 to 1994. He is the Chair and founder of the French organization of academics for the respect of international law in Palestine (AURDIP). He is the author of several mathematical research books and popular books, including a comic strip “Climate emergency: there is still time!” (Urgence climatique: il est encore temps!) published in 2021 with Etienne Lécroart.
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