## News from the world of Maths

Is there a perfect voting system? In the 1950s the economist Kenneth Arrow asked himself this question and found that the answer is no, at least in the setting he imagined.

Ben Allanach is a theoretical physicist who has worked at CERN and is interested in something called *supersymmetry*, which predicts particles that could be dark matter and might be produced in the collisions at CERN. Watch Ben explain it all in this TEDx lecture.

From the makers of *Dimensions* comes a great free online movie exploring dynamical systems, the butterfly effect and chaos theory by means of stunning visuals accompanied by a beautiful musical score.

Every year the London Mathematical Society puts on a pair of popular lectures that are well worth seeing. This year's topics are maths in the court room and the mysteries of additive number theory. Find out more here.

Cosmologists gathered in the Netherlands last week to discuss a new view of the Universe. *The Universe as seen by Planck* was an international conference to discuss the recently released scientific results from the Planck satellite, including two particularly striking snapshots of the early Universe.

Find out why physicists believe that they might be in a lecture by John D. Barrow at the Bath Royal Literary and Scientific Institution on April 13th.

Here's a fitting tribute to the legendary mathematician Paul Erdős, who would have turned 100 today.