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On the Topological Classification of Real Enriques Surfaces. I
This note contains preliminary calculation of topological types or real
Enriques surfaces. We realize 59 topological types of real Enriques surfaces
(Theorem 6) and show that all other topological types belong to the list of 21
topological types (Theorem 7). In fact, our calculation contains much more
information which is probably useful to constract or prohibit unknown
topological types.Comment: 15 pages, Ams-Tex Version 2.
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