Examples of non-trivial contact mapping classes in all dimensions (1504.03366v2)

Published 13 Apr 2015 in math.SG and math.GT

Abstract: We give examples of contactomorphisms in every dimension that are smoothly isotopic to the identity but that are not contact isotopic to the identity. In fact, we prove the stronger statement that they are not even symplectically pseudo-isotopic to the identity. We also give examples of pairs of contactomorphisms which are smoothly conjugate to each other but not by contactomorphisms.

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