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math.GT2010★ 6 cited
Eliashberg's proof of Cerf's theorem
Hansjörg Geiges, Kai Zehmisch
Following a line of reasoning suggested by Eliashberg, we prove Cerf's theorem that any diffeomorphism of the 3-sphere extends over the 4-ball. To this end we develop a moduli-theo…
math.SG2010★ 1 cited
The annulus property of simple holomorphic discs
Kai Zehmisch
We show that any simple holomorphic disc admits the annulus property, i.e., each interior point is surrounded by an arbitrary small annulus consisting entirely of injective points.…