On endomorphisms of projective bundles
On endomorphisms of projective bundles
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关于射影丛的自同态
DOI:
10.1007/s00229-002-0347-z
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发表时间:
2002
影响因子:
0.6
通讯作者:
E. Amerik
中科院分区:
文献类型:
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作者:
E. Amerik
LetXbe a projective bundle. We prove thatXadmits an endomorphism of degree >1 and commuting with the projection to the base, if and only ifXtrivializes after a finite covering. WhenXis the projectivization of a vector bundleEof rank 2, we prove that it has an endomorphism of degree >1 on a general fiber only ifEsplits after a finite base change.