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What's the significance of this equation? watch

1. In layman terms please I may study maths but I couldn't get anything from it (largely cause I couldn't work out wtf the terms mean't!)

Anyway, I saw this on a turkish note today

2. Here.
3. I was looking for layman terms, I already checked his name on Wiki That article just has a load of words I've never heard of before. Never mind, math in layman terms never works well anyway :x
4. German banknotes (used to) have the normal distribution on them, which thankfully is a bit easier to explain and picture.
5. It would help to know how you've met this and how much you are already comfortable with. If you are comfortable with the idea of a non-singular quadratic form then it seems fairly easy to define Arf (see the wiki article). If you want to know its signifance with knots it probably depends on how much algebraic topology you already know. It looks like a big ask to be able to paraphrase that wiki article into "layman" terms.
6. (Original post by RichE)
It would help to know how you've met this and how much you are already comfortable with.
He did actually say where he met it - although it was perhaps not totally obvious.

It's on the back of the Turkish 10 Lira banknote:

Perhaps we should immortalise Andrew Wiles on the £5 note? (£5 because it would seem fitting to choose a note of prime denomination).
7. (Original post by DFranklin)
He did actually say where he met it - although it was perhaps not totally obvious.

It's on the back of the Turkish 10 Lira banknote:

Perhaps we should immortalise Andrew Wiles on the £5 note? (£5 because it would seem fitting to choose a note of prime denomination).
8. (Original post by The Muon)
9. (Original post by Diagoras)
All I see is a box which says we dont allow off site image links
10. (Original post by The Muon)
All I see is a box which says we dont allow off site image links
Ok. Then here is the link: http://www.math.rochester.edu/u/facu...09.00.00_r.jpg
11. Sorry - fixed. Annoying thing about those sites is that it looks OK when you post it because it's already been cached in your browser. And I didn't expect an .edu site to have problems with hot-linking.
12. (Original post by DFranklin)
Sorry - fixed. Annoying thing about those sites is that it looks OK when you post it because it's already been cached in your browser. And I didn't expect an .edu site to have problems with hot-linking.
Cheers, now I can see that all the fuss was worth it
13. Yep. I did wonder what a "turkish note" was, but couldn't be arsed to enquire.
14. (Original post by DFranklin)
He did actually say where he met it - although it was perhaps not totally obvious.
Sorry I missed that - though I don't know how one might go about explaining what it means to the OP; even though I know what homology groups and intersection form are I have no intuitive feel for quadratic forms over Z_2, so not quite sure what the Arf invariant represents even for an algebraic curve.

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