If M’s a complete metric space,

And non-empty, it’s always the case,

If f’s a contraction,

Then under its action,

Exactly one point stays in place!

*(From: Mymaths.blogspot.co.uk)*

A mathematician confided

That a Moebius* strip is one sided

And you get quite a laugh

When you cut it in half:

In stays in one piece when divided.

The topologist’s child was quite hyper

Till she wore a Moebius diaper.

The mess on the inside

Was thus on the outside:

It was easy for someone to wipe her.

*(From: Wikipedia – mathematical joke)
*

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