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math.AG2002
The Ordinary Limit for Varieties over Z[x_1,...,x_r]
Jan Stienstra
We investigate for families of smooth projective varieties over a localized polynomial ring Z[x_1,...,x_r][D^{-1}] the conjugate filtration on De Rham cohomology tensored with Z/NZ…
math.AG2002
Ordinary Calabi-Yau-3 Crystals
Jan Stienstra
We show that crystals with the properties of crystalline cohomology of ordinary Calabi-Yau threefolds in characteristic p>0, exhibit a remarkable similarity with the well known str…