Sir, - On January 1st/2nd, D. A. Morton Blake's treatment of the problem of "how many angelic beings could fit on to the point of a pin" led to the mathematical problem of dividing zero by zero.
While in general in mathematics, division by zero is not, defined, Papy (Mathematique, Moderne Vol 1, p283), states an exception, that "zero is the only number divisible by zero", and shows that it does so zero times. Therefore, the answer to the problem would seem to be that zero angels can fit on to the point of a perfect pin. - Yours, etc.,
47 Ardglas, Dundrum, Dublin 16.