[vlasev]

You'll have to go to the previous paper[1], where this Todd function is supposedly defined and...it's not defined there either. I mean, the whole thing is really sad and not something that I feel like talking much. Just give things a read.

[1] https://drive.google.com/open?id=1WPsVhtBQmdgQl25_evlGQ1mmTQ...

[mlechha]

Atiyah says, Hirzebruch named and defined the function. Why not look for it in the work of Hirzebruch that Atiyah cites at the end?