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Degenerations of surfaces. (English) Zbl 0682.14007

Algebraic geometry, Proc. Symp., Sendai/Jap. 1985, Adv. Stud. Pure Math. 10, 755-764 (1987).
[For the entire collection see Zbl 0628.00007.]
In this article, the third case of the author’s main lemma relating to S- degenerations of surfaces [see M. Miyanishi, ibid. 415-447 (1987; cf. the review above)] is handled, thus completing the proof of the author’s theorem.
Reviewer: R.R.Simha

MSC:

14E30 Minimal model program (Mori theory, extremal rays)
14D15 Formal methods and deformations in algebraic geometry
14E05 Rational and birational maps