## Kommende Konferenzen und Aktivitäten

- Young Women in Geometry (Mon, 03 Apr 2017 - Mit, 05 Apr 2017)
- Modular Forms are everywhere (Mon, 15 Mai 2017 - Fre, 26 Mai 2017)
- Arbeitstagung 2017 on "Physical Mathematics" in honor of Yuri Manin (Mon, 19 Jun 2017 - Fre, 23 Jun 2017)

## Cantor-Medaille für Gerd Faltings

*Berlin, 3. Februar 2017*. Gerd Faltings, Direktor am Max-Planck-Institut für Mathematik in Bonn, Honorarprofessor für Mathematik an der Universität Bonn und Mitglied im Hausdorff Center for Mathematics, dem Bonner Exzellenzcluster für Mathematik und mathematische Ökonomie, erhält die Cantor-Medaille der Deutschen Mathematiker-Vereinigung (DMV). Das beschloss das Präsidium der DMV kürzlich in Berlin. Die Cantor-Medaille ist die bedeutendste wissenschaftliche Auszeichnung, die die DMV vergibt.

## New Horizons in Mathematics Prize awarded to Geordie Williamson

**Geordie Williamson**has received a New Horizons in Mathematics Prize jointly with Benjamin Elias for pioneering work in geometric representation theory, including the development of Hodge theory for Soergel bimodules and the proof of the Kazhdan-Lusztig conjectures for general Coxeter groups. Geordie had been advanced reseracher at the Max Planck Institute for Mathematics from 2011 until August 2016, when he moved to a position at the University of Sydney in his native country Australia.

## Escher and the Droste effect. Public talk by Hendrik Lenstra, Wednesday, 14 December

In 1956, the Dutch graphic artist M.C. Escher made an unusual lithograph with the title `Print Gallery‘. It shows a young man viewing a print in an exhibition gallery. Amongst the buildings depicted on the print, he sees paradoxically the very same gallery that he is standing in. A lot is known about the way in which Escher made his lithograph. It is not nearly as well known that it contains a hidden `Droste effect‘, or infinite repetition; but this is brought to light by a mathematical analysis of the studies used by Escher. On the basis of this discovery, a team of mathematicians at Leiden produced a series of hallucinating computer animations. These show, among others, what happens inside the mysterious spot in the middle of the lithograph that Escher left blank.

## Exhibition "Women of Mathematics throughout Europe" at MPIM opening on November 10th

The exhibition "Women of Mathematics throughout Europe" will be on public display at the Max Planck Institute for Mathematics from November 10 to December 23, 2016. This touring exhibition, whose starting point is the 7th European Congress of Mathematics held in July 2016 in Berlin, features the portrays of thirteen female mathematicians, sharing their experience, thus serving as role models to encourage young women to enter mathematics, a field where women are still largely underrepresented. The exhibition will be launched with the:

## Opening Event

Date/time: November 10th, 2016, 18:00h

Place: Max Planck Institute for Mathematics, Vivatsgasse 7, Bonn

## Higher Geometric Structures along the Lower Rhine VIII

This is the eighth of a series of short workshops jointly organized by the Geometry/Topology groups in Bonn, Nijmegen, Utrecht and Leuven, all situated along the Lower Rhine. The focus lies on the development and application of new structures in geometry and topology such as Lie groupoids, differentiable stacks, Lie algebroids, generalized complex geometry, topological quantum field theories, higher categories, homotopy algebraic structures, higher operads, derived categories, and related topics.

## "Cannons at Sparrows". Hirzebruch lecture by Günter M. Ziegler on Wednesday, November 2

The story told in this lecture starts with an innocuous little geometry problem, posed in a September 2006 blog entry by R. Nandakumar, an engineer from Calcutta, India: "Can you cut every polygon into a prescribed number of convex pieces that have equal area and equal perimeter?" This little problem is a "sparrow", tantalizing, not as easy as one could perhaps expect, and *Recreational Mathematics*: of no practical use.

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