# The next Piccadilly line train is leaving from ....

Kings Cross Station now not only has a platform 9$\frac{3}{4}$, but also a platform 0. And for the numerically challenged, there are repeated announcements that *'customers are advised that Platform 0 is situated next to Platform 1'*

I suppose the Underground platforms will now have to be given complex numbers.

[That is an unofficial entry from the Department of Pure Mathematics and Mathematical Statistics, University of Cambridge, for next year's Round Britain Mathematical Joke competition.]

Levels:

- david's blog
- Log in or register to post comments

## Comments

Michael Power (not verified)

Sat, 19/11/2011 - 5:59pm

Permalink

## Platform Numbering

"And for the numerically challenged, there are repeated announcements that 'customers are advised that Platform 0 is situated next to Platform 1' "

The station at Newcastle upon Tyne do not have a Platform 0, but the platform numbering is designed to challenge assumptions that it reflects the sequence passengers see as they walk from one side to the other. As platform 11 is the first platform, this is rather inconvenient when you don't know the system and have 1 minute to find your train.

mrc7

Mon, 21/11/2011 - 4:54pm

Permalink

## Platform numbering

Kate Bellingham (not verified)

Sat, 19/11/2011 - 10:57pm

Permalink

## Platform Numbering

david

Sat, 03/12/2011 - 6:55pm

Permalink

## negative and complex numbers

If they started building platforms in York Road, these would be negative as they are the other side of 0. But the underground platforms are

belowplatforms 0,1,2 etc, so they form a new dimension, and is analogous to mathematical idea of the complex plane. But after all this explanation the joke seems a bit weak, to be honest!Geoff Smith (not verified)

Sun, 20/11/2011 - 7:14pm

Permalink

## Platform numbering

Ken Rice (not verified)

Wed, 23/11/2011 - 4:50am

Permalink

## That is an unofficial entry .

That is an unofficial entry ... for next year's Round Britain Mathematical Joke competition.tk (not verified)

Fri, 25/11/2011 - 12:28pm

Permalink

## Uncertainty