bn:03563269n
Noun Concept
EL
hopf επιφάνεια
EN
In complex geometry, a Hopf surface is a compact complex surface obtained as a quotient of the complex vector space C 2 ∖ { 0 } {\displaystyle \mathbb {C} ^{2}\setminus \{0\}} by a free action of a discrete group. Wikipedia
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