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20012004
most citedSignatures of foliated surface bundles and the symplectomorphism groups of surfaces

22 citations · 37 across the 3 of their papers we have counts for

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math.SG2004★ 9 cited

Free circle actions with contractible orbits on symplectic manifolds

D. Kotschick

We prove that closed symplectic four-manifolds do not admit any smooth free circle actions with contractible orbits, without assuming that the actions preserve the symplectic forms…

math.SG2003★ 22 cited

Signatures of foliated surface bundles and the symplectomorphism groups of surfaces

D. Kotschick, S. Morita

For any closed oriented surface F of genus at least three, we prove the existence of foliated F-bundles over surfaces such that the signatures of the total spaces are non-zero. We…