• Modified action and differential operators on the 3-D sub-Riemannian sphere 

      Chang, Der-Chen; Markina, Irina; Vasiliev, Alexander (Peer reviewed; Journal article, 2010-12)
      Our main aim is to present a geometrically meaningful formula for the fundamental solutions to a second order sub-elliptic differential equation and to the heat equation associated with a sub-elliptic operator in the ...