Duality for relative logarithmic de Rham–Witt sheaves and wildly ramified class field theory over finite fields
2018 ◽
Vol 154
(6)
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pp. 1306-1331
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Keyword(s):
De Rham
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In order to study$p$-adic étale cohomology of an open subvariety$U$of a smooth proper variety$X$over a perfect field of characteristic$p>0$, we introduce new$p$-primary torsion sheaves. It is a modification of the logarithmic de Rham–Witt sheaves of$X$depending on effective divisors$D$supported in$X-U$. Then we establish a perfect duality between cohomology groups of the logarithmic de Rham–Witt cohomology of$U$and an inverse limit of those of the mentioned modified sheaves. Over a finite field, the duality can be used to study wildly ramified class field theory for the open subvariety$U$.
Keyword(s):
Keyword(s):
1999 ◽
pp. 213-240
2003 ◽
Vol 194
(2)
◽
pp. 199-223
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Keyword(s):
1983 ◽
pp. 109-126
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