WORLD MATHEMATICAL YEAR 2000 orticity Posters in the London Underground Supported by EPSRC Water vapour mixes into the eye of a hurricane just as cream mixes into a stirred cup of coffee... dc +u.Ve kV2c ...both processes are described by the same type of mathematics. Isaac Newton Institute Understanding the dynamics for Mathematical Sciences Stirs http://www.newton.cam.ac.uk of hurricanes can save lives! Untrersty of Cambeasgn.U.K. 6 S98 ■三月：数学漩涡 (maths stirs
WORLD MATHEMATICAL YEAR 2000 Posters in the London Underground Supported by EPSRC WEATHE In 1963,the meteorologist E.N.Lorenz discovered chaotic behaviour in a simple model of 元=G(y-D the weather. 9=0c=y一t2 The smallest influences can 之=xy-62 have very large effects. These shapes This realisation had enormous illustrate the complicated impact on the use of modern dynamics in mathematics for analysing the the Lorenz weather,climate changes,and equations fluctuations in the stock market. Maths Visualisation Isaac Newton Institute of geometric for Mathematical Sciences structures is an http://www.newton.cam.ac.uk/ Predicts important tool 关 in many areas of modern mathematics ■三月：混沌中的数学(maths predicts.)
The tip of the iceberg WORLD MATHEMATICAL YEAR 2000 Posters in the London Underground Supported by EPSRC is shaped by 80%of a floating iceberg is hidden below the Catastrophe ocean surface. As this part melts,the iceberg Theory can become unstable. It topples sideways-and the process starts all over again. Catastrophe Theory helps explain these instabilities. ATHS IS COOL Isaac Newton Institute for Mathematical Sclences www.newton.cam.ac.uk 关 DCopyright (C)2000 Andrew D.Burbank 四月：数学也很“酷”：(maths is cool-突变理论)
WORLD MATHEMATICAL YEAR 2000 Posters in the London Underground Supported by EPSRC Magnetic fields deep within the Sun bubble up through its surface.They tangle and twist causing huge explosions which shoot ATHS HOTS UP material out into space. These Solar storms disrupt the Earth's environment, affecting communications navigation systems and power grids.Maths helps us to understand how these powerful storms occur. Isnac Newton Institute for Mathematical Sciences www.newton.cam.ac.uk 五月：太阳黑子的数学之谜(maths hots up)
KC WORLD MATHEMATICAL YEAR 2000 Posters in the London Underground Supported by EPSRC 20 ER Is this circle network familiar? Can you identify the stations? The way things are connected is sometimes more important than where they actually are. NH CTS The mathematics behind all kinds of networks-including mobile phone transmitters, roads and the internet-helps us to improve their efficiency and move information around the globe ever more quickly. GR Isaac Newton Institute for Mathematical Sciences www.newton.cam.ac.uk 六月：数学联通天下(maths connects)