Bang! Bang! Bang! Explosively Large Numbers

Enormous numbers pop up in both mathematics and physics. The order of the monster group, the largest of the 26 sporadic groups, is $latex \displaystyle 808,017,424,794,512,875,886,459,904,961,710,757,005,754,368,000,000,000 &fg=000000$ which is approximately $latex {8\times 10^{53}}&fg=000000$. The number of atoms in the universe is estimated to be about $latex {10^{80}}&fg=000000$. When we consider permutations of large sets, even … Continue reading Bang! Bang! Bang! Explosively Large Numbers

Covid-19: Modelling the evolution of a viral outbreak

There is widespread anxiety about the threat of the Covid-19 virus. Mathematics now plays a vital role in combating the spread of epidemics, and will help us to bring this outbreak under control. For centuries, mathematics has been used to solve problems in astronomy, physics and engineering. But now biology and medicine have become topics … Continue reading Covid-19: Modelling the evolution of a viral outbreak

Samuel Haughton and the Twelve Faithless Hangmaids

In his study of humane methods of hanging, Samuel Haughton (1866) considered the earliest recorded account of execution by hanging (see Haughton's Drop on this site). In the twenty-second book of the Odyssey, Homer described how the twelve faithless handmaids of Penelope ``lay by night enfolded in the arms of the suitors'' who were vying … Continue reading Samuel Haughton and the Twelve Faithless Hangmaids