Sir, – The new Liffey bridge will allow Luas trams from Broombridge to cross the city and finally link the two lines. Given the Broombridge connection, the need to motivate young people to engage with mathematics and the role to be played in this by recognising the contributions of those who have made impressive mathematical contributions to the development of modern society – what about our own Mr Hamilton? Who? Many will ask. Exactly. – Yours, etc,