Ultradistribution characterisation conjecture for the sub-Laplacian on the Heisenberg group
Let Hn\mathbb H_nHn be the Heisenberg group, let γX,L2s(Hn)\gamma^{s}_{\mathbf{X},L^2}(\mathbb H_n)γX,L2s(Hn) and γX,L2(s)(Hn)\gamma^{(s)}_{\mathbf{X},L^2}(\mathbb H_n)γX,L2(s)(Hn) be the corresponding sub-Laplacian Gevrey…