most citedTuraev Hyperbolicity of Classical and Virtual Knots

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math.DG2021

Deformation retraction of the group of strict contactomorphisms of the three-sphere to the unitary group

Dennis DeTurck, Herman Gluck, Leandro Lichtenfelz +3

We prove that the group of strict contactomorphisms of the standard tight contact structure on the three-sphere deformation retracts to its unitary subgroup U(2).