Danielewski–Fieseler surfaces
Danielewski–Fieseler surfaces
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Danielewski-Fieseler 曲面
DOI:
10.1007/s00031-005-1004-x
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发表时间:
2004
影响因子:
0.7
通讯作者:
A. Dubouloz
中科院分区:
文献类型:
--
作者:
A. Dubouloz
AbstractWe study a class of normal affine surfaces, with
additive group actions, which contains in
particular the Danielewski surfaces in A3
given by the equations xnz = P(y), where P is
a nonconstant polynomial with simple roots. We call
them Danielewski--Fieseler surfaces. We reinterpret
a construction of Fieseler to show
that these surfaces appear as the total spaces of
certain torsors under a line bundle over a curve
with an r fold point. We classify
Danielewski-Fieseler surfaces through labelled
rooted trees attached to such a surface in a
canonical way. Finally, we characterize those
surfaces which have a trivial Makar-Limanov
invariant in terms of the associated trees.