## Metric Measure Spaces and Ricci Curvature

## Number theory downside up

On April 6--7 there will be four talks from number theorists employed by the University of New South Wales (Sydney, Australia)

## Mathematical Beauty and Truth in Physics. Hirzebruch Lecture 2015 by Arthur Jaffe

Aesthetic values, commonly accepted in mathematics and the arts, provide a central point of view in thinking about the natural world. History illustrates how nature provides wonderful examples of this philosophy. How does mathematical beauty mesh with our current view of truth in physics?

## Program on Higher Structures in Geometry and Physics

### Background and goal

One of the classical prerogatives of mathematics is to understand, distinguish and classify its objects. This is favorably achieved by considering naturally appearing additional structures. In recent times, great progress has been made on this front. These leaps in understanding have been so successful, that there is a growing need to understand the different structures themselves and their interplay using higher or meta-structures.

## Symplectic Geometry Day

## Geometric Group Theory

## Dynamics and Numbers

**Goals**

We propose bringing together researchers in ergodic theory, topological dynamics, number theory, and combinatorics who are interested in similar problems from very different perspectives, with the ultimate goal of elucidating the nature of the links among these fields. There was a conference in the final week (July 21-25, 2014).

**Sergiy Kolyada** skolyada$@$mpim-bonn$.$mpg$.$de

## Special Program "Tropical Geometry and Topology"

Four mini-courses will be organized during the program:

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