See http://mathoverflow.net/questions/168888/who-invented-diagrammatic-algebra

The thesis (in German) can be download here:

]]>We shall upper bound :

Then, Taylor expand the logarithm, and asymptotically only the first two terms contribute. If you do this out, you should get the bound .

This weakens the resulting bound by a constant factor of , but the exponential term will turn out to be the same. This is of course assuming I didn't make any stupid mistakes (I really hope!). Overall a great article though–fantastic exposition and blog post. I really learned a lot, thanks!

]]>$$

1 \to N \to SU(2) \to Q \to 1

$$ ]]>