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A higher-dimensional generalization of Mumford's rational pullback for Weil divisors. (arXiv:1807.07297v1 [math.AG])
来源于:arXiv
Mumford defined a rational pullback for Weil divisors on normal surfaces,
which is linear, respects effectivity, and satisfies the projection formula. In
higher dimensions, the existence of small resolutions of singularities
precludes such general results. We single out a higher-dimensional situation
that resembles the surface case and show for it that a rational pullback for
Weil divisors exists, which is also linear, respects effectivity, and satisfies
the projection formula. 查看全文>>