Pure maths seminar: Marcelo de Martino

Tuesday 21 May 2024, 3:00pm to 4:00pm


PSC - PSC LT - View Map

Open to

Postgraduates, Staff


Registration not required - just turn up

Event Details

Unramified Langlands Correspondence for Tori

In the beginning of the 70's, R. Langlands described the space of continuous automorphic characters of an algebraic torus T, defined over a global field F and splitting over a Galois extension E, in terms of the group of continuous, first-cohomology classes of the relative Weil group of E/F with values in the complex dual torus. In some sense, this correspondence launched what is now known as the Langlands programme, which has been a fruitful area of research since then. In this talk, we show that, when topologized in the sense of C. Moore, the cohomology group above is a metric space and its identity component parametrizes the space of unramified characters. This is an ongoing joint work with E. Opdam.


Marcelo de Martino

Contact Details

Name Dirk Zeindler


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Room A54 on the bottom of the PSC building.