Circle actions on 4-manifolds I |
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Authors: | Wolfgang Huck |
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Institution: | (1) Fakultt fr Mathematik, Universitt Konstanz, Universittsstr. 10, D-78464 Konstanz |
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Abstract: | Using cohomological methods it is proved that the intersection form of a closed (cohomology-) 4-manifoldM withH
1(M)=0 which admits a non-trivial circle action is the sum of one- and two-dimensional forms provided every fixed point has a
neighbourhood containing at most 4 orbit types. |
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Keywords: | |
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