# Arthur Ogus

**Arthur Edward Ogus** is an American mathematician. His research is in algebraic geometry; he has served as chair of the mathematics department at the University of California, Berkeley.[1]

Ogus did his undergraduate studies at Reed College, graduating in 1968, and earned his doctorate in 1972 from Harvard University under the supervision of Robin Hartshorne. His doctoral students at Berkeley include Kai Behrend.[1][2]

In September 2015, a conference in honor of his 70th birthday was held at the Institut des Hautes Études Scientifiques in France.[3]

## Selected publications

- Books

- Berthelot, Pierre; Ogus, Arthur (1978),
*Notes on crystalline cohomology*, Princeton, N.J.: Princeton University Press, ISBN 0-691-08218-9, MR 0491705. - Deligne, Pierre; Milne, James S.; Ogus, Arthur; Shih, Kuang-yen (1982),
*Hodge cycles, motives, and Shimura varieties*, Lecture Notes in Mathematics,**900**, Berlin-New York: Springer-Verlag, ISBN 3-540-11174-3, MR 0654325. - Ogus, Arthur (1994), "
*F*-crystals, Griffiths transversality, and the Hodge decomposition",*Astérisque*,**221**, MR 1280543.

- Research papers

- Ogus, Arthur (1973), "Local cohomological dimension of algebraic varieties",
*Annals of Mathematics*, Second Series,**98**: 327–365, doi:10.2307/1970785, MR 0506248. - Bloch, Spencer; Ogus, Arthur (1974), "Gersten's conjecture and the homology of schemes",
*Annales Scientifiques de l'École Normale Supérieure*,**7**: 181–201, MR 0412191. - Ogus, Arthur (1979), "Supersingular
*K*_{3}crystals",*Journées de Géométrie Algébrique de Rennes (Rennes, 1978), Vol. II*, Astérisque,**64**, Soc. Math. France, Paris, pp. 3–86, MR 0563467. - Berthelot, Pierre; Ogus, Arthur (1983), "
*F*-isocrystals and de Rham cohomology I",*Inventiones Mathematicae*,**72**(2): 159–199, doi:10.1007/BF01389319, MR 0700767.

## References

- Faculty profile, UC Berkeley, retrieved 2014-11-19.
- Arthur Ogus at the Mathematics Genealogy Project
- Algebraic geometry: A conference in honor of Arthur Ogus on the occasion of his 70th birthday, Institut des Hautes Études Scientifiques, retrieved 2014-11-19.

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