On the Pontrjagin-Viro form
classification
alg-geom
math.AG
keywords
formpontrjagin-virosurfacesalgebraiccalculatedcomplexdefinedenriques
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A new invariant, the Pontrjagin-Viro form, of algebraic surfaces is introduced and studied. It is related to various Rokhlin-Guillou-Marin forms and generalizes Mikhalkin's complex separation. The form is calculated for all real Enriques surfaces for which it is well defined.
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