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On degenerations of plane Cremona transformations

arXiv:1401.6676 · doi:10.1007/s00209-015-1539-z

Abstract

This article studies the possible degenerations of plane Cremona transformations of some degree into maps of smaller degree.

21 pages, corrected typos and Proposition 3.21, Mathematische Zeitschrift, published online on 2015/9/25