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[ramsfan]

Got to see this card at last. On my friend's version there's a tiny mark about half way along the top margin. He says it looks a bit like a city scape when magnified using photoshop. Time to get the microscopes out? Ruminating on the white city. I thought of the London Oympics which took place there. The Clay Institute do run Mathematical Olympiads but no real connection. He thought of the White City in Lord of the Rings. When you google White City, you get a book called the Devil in the White City about the fair that changed America, a fantasy role playing game called white city, somewhere in New Mexico and lots more.
I wondered what could be submitted that would be markable. I thought a complicated mathematical formula would be hard so I wondered if something like this sentence from the clued website: "The failure of the Riemann hypothesis would create havoc in the distribution of prime numbers"
My friend drew my attention to the tube map on "card" number 268 which has recently accompanied card batches. It has a black zeta shaped area, two orange lines which look like an equals etc. Also the tube lines are names of inks. Wouldn't go with the self contained nature of the cards, but still.
I looked up 3333s because of tretretretres. Apart from some college football there was a software website that I couldn't enter. I googled tretretretres. Apart from perplexcity, there were some french messages where it appeared to mean very tres in patois and a spanish basketball site where the next entry suggested mickey taking along the lines of I am stammering, so I don't think it meant anything.
Some things to chew on but no answers. However do check if you've got that little smudge at the top of the card in case it means anything.

[philippa89]

i cant seem to find the smudge your talking about.
where abouts on the top margin is it? on the silver or the black?

[The First Speaker]

Don't think this has been mentioned. Has anyone with the card noticed a black dot in the top right corner (in the silver part)? It was the one of the first things I noticed and don't think its a printing error, can anyone else confirm its on their card too?

I also think I can see some sort of hidden text in the grey part above the text, can't make it out yet though.

[timair]

Re: [UPDATE] A clue!

[c1023]

[buzman]

I can confirm that my card *doesn't* have the black dot

[lumleysusan]

looking on the webiste given, the CMI have given 7 prize problems - each awarding $1million.

[Rube2k]

Maybe posting one of those 7 answers would do the trick?

[GasparLewis]

Why don't we try a tautology?
Easiest proofs in the world.

And all it asks for is a proof; not necessarily one for Riemann.
(Doubt it will work at all, but hey, what other leads do we have?)

[Kvasir]

[spugmeistress]

Judging from the replies people have got from trying to submit proofs, namely that theyre very nice but send them somewhere else, and look in the 'margin' to solve this particular card, I really think we need to go back to what we were saying in the first place, there *must* be some other question on here. I havent got a copy of the card myself so I cant look, and I know other people have been looking but I think we do need to do a detailed search of this card to see what else it could be hiding, whether its special inks or micro dots or anything that could be 'margin'-like. The rest of the card seems to be just one big red herring.
rach =)

[locqust]

Well if its microdots its going to be in the top grey margin just above the writing, however the printing process also means the grey is dotted. Im guessing this must be a special ink job not microdots personally.

[The First Speaker]

There's been some talk about the fact that this card is the only one with a black header which causes the word CITY to stand out. While doing a bit of searching on Riemann and the word city I came across a book by A.C.Clarke called The City and the Stars. This tells the story of a future civilisation that lives within a domed city, known as Diaspar, which they never leave. The book features a mathematician who looks at the distribution of primes and notices a pattern that has since become known as the Ulam spiral. Basically if you start in the centre of a grid and then spiral out highlighting the primes as u go, they have a tendency to fall on diagonal lines. This creates some interesting pictures, see here for more info:

http://plus.maths.org/issue25/features/whirlpool/

No idea if any of this is relevant, but thought it was worth mentioning!

As for hidden messages on the card etc. I'm convinced there's something written in the grey margin at the top. I've been staring at those grey dots for hours now though, so may just be imagining things!! If anyone can get a hi-res scan of that part of the card and take a closer look that'd be great (my scanner is broke )

[rose-nli]

black dot

[rose-nli]

City in white