Sir Peter Swinnerton-Dyer obituary

Peter Swinnerton-Dyer, who has died aged 91, is famous among mathematicians as one author of the Birch-Swinnerton-Dyer conjecture in number theory. Published in 1965, this was immediately influential, becoming even more prominent in 1999 as one of the Clay Mathematics Institute’s seven million dollar Millennium Prize Problems, alongside the Riemann hypothesis. Swinnerton-Dyer’s first published paper…

Research explains public resistance to vaccination

Social imitation dynamics of vaccination can exhibit hysteresis. This figure illustrates a hysteresis loop in relation to outbreaks of measles and other childhood diseases in Europe and North America. Credit: Feng Fu and Xingru Chen. Why is it so challenging to increase the number of people who get vaccinated? How does popular resistance to vaccination…