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A presentation theorem for smooth projective schemes over discrete valuation rings
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abstract
In this article, we give a proof for a geometric presentation theorem for any irreducible scheme $X$ smooth projective over a discrete valuation ring $R$. As a consequence, for any reductive $R$-group scheme $\mathbf{G}$, we prove that any generically trivial principal $\mathbf{G}$-bundle over $X$ glued to a principal $\mathbf{G}_U$-bundle over the affine line $\mathbb{A}^1_U$ for a semilocal affine scheme $U$.
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Cited by 1 Pith paper
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Constant case of the Grothendieck-Serre conjecture in mixed characteristic
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