Fermat’s Last Theorem

In the margins of his copy of arithmetica, Fermat proposed that the equation xn + yn = zn had no positive integer solutions of x, y and z for n > 2, and claimed to have discovered a proof for this. Yet, to the dismay of mathematicians for centuries to come, he proceeded to write ‘I have a truly marvellous demonstration of this proposition which this margin is too narrow to contain’.

Fermat’s Last Theorem

The Colour Grey and its Psychological Effects

Has anyone else woken up in the morning and just felt dread at the thought of getting out of bed? Like the world is covered in a thick grey fog and it is too difficult to do anything? When this happens, is it raining or grey outside? Is the room you are in painted in grey or have a cold grey light coming through the windows? This heavy dampening or even depressing feeling may in part be because of the colour and the psychological effects it has on humans.

The Colour Grey and its Psychological Effects