Appendix to "Welschinger invariant and enumeration of real rational curves"

Details Appendix to "Welschinger invariant and enumeration of real rational curves" Appendix to "Welschinger invariant and enumeration of real rational curves"

2003-12-07

arxiv.org/abs/math/0312142v2

Mathematics

Algebraic Geometry

12 pages, no figures, minor linguistic modifications

Scientific paper

The invariance of the Welschinger numbers for real unnodal Del Pezzo surfaces, which we used for the enumeration of real rational curves on real toric Del Pezzo surfaces (see math.AG/0303378 and IMRN 49 (2003), 2639-2653), follows from J.-Y. Welschinger's theorem stated and proved in a symplectic setting (math.AG/0303145 and CRAS, Ser. I, 336 (2003), 341-344). Here, we give an algebraic geometry version of the proof of the above invariance.

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