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math.AG2016
Cancellation for surfaces revisited. I
Hubert Flenner, Shulim Kaliman, Mikhail Zaidenberg
The celebrated Zariski Cancellation Problem asks as to when the existence of an isomorphism for (affine) algebraic varieties and…
math.AG2016
Gaps for geometric genera
Ciro Ciliberto, Flaminio Flamini, Mikhail Zaidenberg
We investigate the possible values for geometric genera of subvarieties in a smooth projective variety. Values which are not attained are called gaps. For curves on a very general…