Spin polynomial invariants for Dolgachev surfaces

Details Spin polynomial invariants for Dolgachev surfaces Spin polynomial invariants for Dolgachev surfaces

1993-11-23

arxiv.org/abs/alg-geom/9311008v1

Mathematics

Algebraic Geometry

24 pages, amstex

Scientific paper

We consider the spin polynomial invariants for bundles with c_2=2 and c_1 =
K_S + 2nk a rational mutiple of the canonical divisor on a Dolgacev surface. It
is shown that the chamber structure can be controlled so that the polynomials
give diffeomorphism invariants of Dolgachev surfaces of the form q_S(n) =
a(n)Q^2 + b(n)Qk^2 + c(n)k^4. The two leading coefficients are computed.

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