Geometry at the ULB

differential geometry at the Université libre de Bruxelles

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Lower Ricci working group talk 4, held on 2 March

On 2nd March, 10h30-12h30, Salle des Profs, Ben Sibley gave the fourth talk in the working group on manifolds with lower Ricci bounds. He discussed the Cheng-Yau gradient estimate, quantitative maximum principles and the existence of special cut-off functions, all necessary technical ingredients for the almost splitting theorem which will be the topic of a future talk.

Getting here

The department of mathematics is in building NO, on the Campus de la Plaine, of the Université libre de Bruxelles. The geometry group is on the 7th floor. This map shows NO, as well as the metro station Delta and entrance 2, which is right by the stop for the number 71 and 72 buses. The number 95 also stops a short walk from the department. See the STIB website for more information on public transport in Brussels.

Image credits

Polished ammonite fossil, by Kara Stenberg, Creative Commons licence CC BY-NC 2.0.

Model of 3D projection of a 120-cell, by Edmund Harriss.

The root system of the exceptional Lie algebra E8. By Jared Tarbell, Creative Commons Licence CC BY 2.0.