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Regular version of the site

Standard Models of Degree 1 del Pezzo Fibrations

Moscow Mathematical Journal. 2018. Vol. 18. No. 4. P. 721-737.

We construct a standard birational model (a model that has Gorenstein canonical singularities) for the three-dimensional del Pezzo fibrations π: XC of degree 1 and relative Picard number 1. We also embed the standard model into the relative weighted projective space ℙ_C(1,1,2,3). Our construction works in the G-equivariant category where G is a finite group.