Abstract
We extend to arbitrary characteristic some known results on automorphisms of complex Enriques surfaces that act identically on the cohomology or the cohomology modulo torsion.
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Notes
- 1.
The assertion is not true for non-classical Enriques surfaces. The analysis of this case reveals a missing case in [5] : X 3 σ may consist of an isolated fixed point and a connected curve.
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Dolgachev, I.V. (2013). Numerical Trivial Automorphisms of Enriques Surfaces in Arbitrary Characteristic. In: Laza, R., Schütt, M., Yui, N. (eds) Arithmetic and Geometry of K3 Surfaces and Calabi–Yau Threefolds. Fields Institute Communications, vol 67. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6403-7_8
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DOI: https://doi.org/10.1007/978-1-4614-6403-7_8
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