We give a direct proof of the Harnack inequality for a class ofdegenerate evolution operators which contains the linearized prototypes of the Kolmogorov and Fokker-Planck operators. We also improve the known results in that we find the optimal constant of the inequality
We consider, for any odd positive integer k, the degenerate Partial Differential Equationu_t = u_xx ...
We prove some Schauder type estimates and an invariant Harnack inequality for a class of degenerate ...
A class of linear second order hypoelliptic operators is studied. Existence and pointwise estimates...
We give a direct proof of the Harnack inequality for a class ofdegenerate evolution operators which ...
We give a direct proof of the Harnack inequality for a class of degenerate evolution operators which...
We give a direct proof of the Harnack inequality for a class of degenerate evolution operators whic...
Some results obtained in a recent study on a general class of hypoelliptic evolution operators are a...
We show that Hypoelliptic Kolmogorov equations are invariant with respect to a suitable Lie group st...
We consider a class of second order hypoelliptic ultraparabolic partial differential equations, a ty...
We consider, for any odd positive integer k, the degenerate Partial Differential Equationu_t = u_xx ...
We prove some Schauder type estimates and an invariant Harnack inequality for a class of degenerate ...
A class of linear second order hypoelliptic operators is studied. Existence and pointwise estimates...
We give a direct proof of the Harnack inequality for a class ofdegenerate evolution operators which ...
We give a direct proof of the Harnack inequality for a class of degenerate evolution operators which...
We give a direct proof of the Harnack inequality for a class of degenerate evolution operators whic...
Some results obtained in a recent study on a general class of hypoelliptic evolution operators are a...
We show that Hypoelliptic Kolmogorov equations are invariant with respect to a suitable Lie group st...
We consider a class of second order hypoelliptic ultraparabolic partial differential equations, a ty...
We consider, for any odd positive integer k, the degenerate Partial Differential Equationu_t = u_xx ...
We prove some Schauder type estimates and an invariant Harnack inequality for a class of degenerate ...
A class of linear second order hypoelliptic operators is studied. Existence and pointwise estimates...