Images of contact structures

This page shows some examples of contact structures. The first three as isotopic, as explained this page. One can also see some examples of characteristic foliations.

You can use these images but, in this case, I prefer to receive a short email telling me about it.

Standard contact structure on ℝ³, version 1

Standard contact structure on ℝ³, version 2

Standard contact structure on ℝ³, version 3

Standard contact structure on 𝕊³

Standard contact structure on the bundle of tangent rays

Overtwisted contact structure