From: =?iso-8859-1?Q?Stein_Arild_Str=F8mme?= <stromme@math.uib.no> Date: Tue, 15 Dec 2009 20:52:44 +0100 Subject: Old file To: "Daniel R. Grayson" <dan@math.uiuc.edu>, Michael Stillman <mike@math.cornell.edu> Dear Dan and Mike, I just came over this old letter to Collino, kind of documenting how Geir and I computed various numbers using Bott's formula, among them numbers of twisted cubics. It probably refers G. Ellingsrud, S. A. Str=F8mme, Bott's formula and enumerative geometry, J. Amer. Math. Soc. 9, 175-193 (1996). I think it would be wonderful if you were able to decipher that code, as you have done with schubert! SA filename=letter_to_collino.txt ----------------------------------------------------------------------------- Subject: Computing twisted cubics and elliptic quartics with Bott's residue formula From: =?iso-8859-1?Q?Stein_Arild_Str=F8mme?= <stromme@math.uib.no> Date: Tue, 15 Dec 2009 21:10:10 +0100 Cc: "Daniel R. Grayson" <dan@math.uiuc.edu>, Michael Stillman <mike@math.cornell.edu> This may be a simpler file containing the essentials: filename=toricubics.txt For elliptic quartic curves, a reasonably similar story: filename=elliptic_quartics.txt ----------------------------------------------------------------------------- Subject: Re: Computing twisted cubics and elliptic quartics with Bott's residue formula From: =?iso-8859-1?Q?Stein_Arild_Str=F8mme?= <stromme@math.uib.no> Date: Fri, 18 Dec 2009 08:34:00 +0100 Cool! The paper itself is in the arxiv, by the way: http://arxiv.org/abs/alg-geom/9411005 For the explanation/proof of Bott's formula itself, there are many other much better texts, of course, our treatment is not the clearest and best by far.

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