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Maths Poems
A Prime Rhyme
If you want to show the primes go on for ever,
There's a trick that Euclid taught us long ago.
Suppose not: then multiply these primes together,
And add one to get a number, call it rho.
Just take a careful look at this big number,
Rho has to have a factor which is prime,
And it can't be one of those you 've got already,
So there's your contradiction shown in rhyme.
KJF
A Week in the Life of a Mathematician
(with apologies to Michael Flanders and Donald Swann)
'Twas on a Monday morning I had a bright idea,
I was lying in the bath tub and the strategy seemed clear,
For a problem posed by Erdös back in nineteen forty nine,
On sequences dilated into subsets of the line
'Twas on a Tuesday morning I jotted down my thoughts,
I covered backs of envelopes with surds and aleph noughts.
After several cups of coffee I began to feel inspired,
And a lengthy calculation gave the answer I desired.
'Twas on a Wednesday morning I wrote the details out.
My lemmas and corollaries left little room for doubt.
I filled up many pages just to get the logic right,
And with epsilons and deltas I made it watertight.
'Twas on a Thursday morning I typed the paper up,
With "slash subset" and "slash mapsto" to say nothing
of "slash cup".
My LaTeXing was perfect, printed out it looked so good,
Should I send it to the Annals? I rather thought I would!
'Twas on a Friday morning I read the paper through,
I checked out every detail as good authors ought to do.
At the bottom of page twenty in an integral I found,
I'd divided through by zero and the proof crashed to the ground.
On Saturday and Sunday I was too depressed to care,
So 'twas on a Monday morning that I had my next idea.
KJF
(This poem appeared in The London Mathematical Society Newsletter,
September 2009)
A Nightmare Seminar
(with apologies to WS Gilbert and Arthur Sullivan)
When you go to a talk, speaker, blackboard and chalk,
at the end of a hard day of teaching,
It's no great surprise that you half close your eyes
and you can't concentrate on the preaching.
You very soon find that your wandering mind
with ideas for strange theorems is teeming,
But you're somewhat bemused and your thoughts get confused
and before very long you're just dreaming.
For you meet a long line of numbers, all prime,
that pass by with a nod now and then,
With big gaps in the queue, the primes become few,
a proportion one over log n.
The gaps vary in size and you want to know why,
so you write as an infinite sum
Riemann's function called zeta, and what could be neater?
A product o'er primes it becomes.
You set out on a train 'cross the vast complex plane
as you search for the zeros of Riemann,
There are plenty to find on the critical line
and you note them all down as you see them.
Then the train hits a pole and you tumble and roll
(near the pole it's as cold as an icicle),
But you pick yourself up and you find you're in luck
for nearby is a rusty old bicycle.
You pedal like mad, though the weather's turned bad,
keeping lookout for rogue Riemann zeros,
But before you get far you arrive at a bar
full of great mathematical heroes.
Next to Hilbert and Gauss, you see Erdös and Straus
who're absorbed in some very hard thinking,
Then there's Riemann and Rayleigh, and Cauchy and Cayley,
and Euler with Fermat is drinking.
You buy Riemann a beer, and he says: "To be clear
why my zeros all lie in a row,
You will need to consider with very great rigour
the way eigenvalues can grow."
Although you implore, he won't tell any more
and so you depart on your travels,
You keep scratching your head at what Riemann said
but the problem you still can't unravel.
By a river that's deep you encounter a heap
of some very large matrices random,
And their eigenvalues and the Riemann zeros
wander off to infinity in tandem.
You then get the point that if one's selfadjoint
eigenvalues all lie on a line,
And the same should be so for the Riemann zeros 
an idea that is somewhat sublime.
You allow a faint smile as you search through the pile
for such matrices, hoping you'll see them,
You spot one midst the trash  and you see in a flash
how to prove the Hypothesis Riemann.
You start work right away and by night and by day
you fill hundreds of pages with writing,
The lemmas are tricky, the details are sticky,
and getting it right's quite exciting.
You break out in a sweat for you mustn't forget
any parts of the proof you're recording,
But at last comes the end and you put down your pen ...
and wake up to your colleagues' applauding ...
You're a regular wreck with a crick in your neck,
Your hair's in a mess and your head's on the desk,
Your mouth's open wide and your tie's to one side,
The board's covered with chalk and you've missed all the talk,
You've forgotten your proof which must be a spoof,
Your face has turned red, you've an ache in your head,
With a throb that's intense and a general sense
That you'll take a long time to recover.
But the seminar's past, you can go home at last,
And the day has been long, ditto ditto my song,
And thank goodness they're both of them over!
KJF
(A version of this poem appears in The Mathematical
Intelligencer, 31(2009) No.3, p.9)
