Talk:Hypoelliptic operator

Unintelligible
There's not one sentence here that I understand. 155.213.224.59 (talk) 18:45, 8 July 2014 (UTC)

Maybe an error
I think that heat operator is parabolic and not hypoelliptic operator. Could someone verify it? — Preceding unsigned comment added by 188.153.189.247 (talk) 12:47, 18 October 2017 (UTC)