• Source: Rigid cohomology

In mathematics, rigid cohomology is a p-adic cohomology theory introduced by Berthelot (1986). It extends crystalline cohomology to schemes that need not be proper or smooth, and extends Monsky–Washnitzer cohomology to non-affine varieties. For a scheme X of finite type over a perfect field k, there are rigid cohomology groups Hirig(X/K) which are finite dimensional vector spaces over the field K of fractions of the ring of Witt vectors of k. More generally one can define rigid cohomology with compact supports, or with support on a closed subscheme, or with coefficients in an overconvergent isocrystal.
If X is smooth and proper over k the rigid cohomology groups are the same as the crystalline cohomology groups.
The name "rigid cohomology" comes from its relation to rigid analytic spaces.
Kedlaya (2006) used rigid cohomology to give a new proof of the Weil conjectures.




References


Berthelot, Pierre (1986), "Géométrie rigide et cohomologie des variétés algébriques de caractéristique p", Mémoires de la Société Mathématique de France, Nouvelle Série (23): 7–32, ISSN 0037-9484, MR 0865810
Kedlaya, Kiran S. (2009), "p-adic cohomology", in Abramovich, Dan; Bertram, A.; Katzarkov, L.; Pandharipande, Rahul; Thaddeus., M. (eds.), Algebraic geometry---Seattle 2005. Part 2, Proc. Sympos. Pure Math., vol. 80, Providence, R.I.: Amer. Math. Soc., pp. 667–684, arXiv:math/0601507, Bibcode:2006math......1507K, ISBN 978-0-8218-4703-9, MR 2483951
Kedlaya, Kiran S. (2006), "Fourier transforms and p-adic 'Weil II'", Compositio Mathematica, 142 (6): 1426–1450, arXiv:math/0210149, doi:10.1112/S0010437X06002338, ISSN 0010-437X, MR 2278753, S2CID 5233570
Le Stum, Bernard (2007), Rigid cohomology, Cambridge Tracts in Mathematics, vol. 172, Cambridge University Press, ISBN 978-0-521-87524-0, MR 2358812
Tsuzuki, Nobuo (2009), "Rigid cohomology", Mathematical Society of Japan. Sugaku (Mathematics), 61 (1): 64–82, ISSN 0039-470X, MR 2560145




External links


Kedlaya, Kiran S., Rigid cohomology and its coefficients
Le Stum, Bernard (2012), An introduction to rigid cohomology (PDF), Special week – Strasbourg

Kata Kunci Pencarian:

• Rigid cohomology
• Crystalline cohomology
• Rigid analytic space
• Pierre Berthelot
• Weil conjectures
• P-adic cohomology
• Motive (algebraic geometry)
• Monsky–Washnitzer cohomology
• John Tate (mathematician)
• Crystal (mathematics)