Add to ORKGWe show that Hypoelliptic Kolmogorov equations are invariant with respect to a suitable Lie group structure. We prove a Harnack inequality which is invariant with respet to the Lie group structure. We give a characterization of the Kolmogorov operators that are related to a homogeneous Lie grou
We give a direct proof of the Harnack inequality for a class of degenerate evolution operators whic...
In this note, by analyzing the behavior at infinity of the matrix symbol of an invariant operator P ...
We study a notion of link of Lie groups suggested by the structure of the partial differential opera...
We show that Hypoelliptic Kolmogorov equations are invariant with respect to a suitable Lie group st...
We show an invariant Harnack inequality for a class of hypoelliptic ultraparabolic operators with un...
We give a direct proof of the Harnack inequality for a class ofdegenerate evolution operators which ...
Abstract. We show an invariant Harnack inequality for a class of hypoelliptic ultraparabolic operato...
We give a direct proof of the Harnack inequality for a class of degenerate evolution operators which...
We consider, for any odd positive integer k, the degenerate Partial Differential Equationu_t = u_xx ...
A class of linear second order hypoelliptic operators is studied. Existence and pointwise estimates...
Some results obtained in a recent study on a general class of hypoelliptic evolution operators are a...
We give a direct proof of the Harnack inequality for a class of degenerate evolution operators whic...
In this note, by analyzing the behavior at infinity of the matrix symbol of an invariant operator P ...
We study a notion of link of Lie groups suggested by the structure of the partial differential opera...
We show that Hypoelliptic Kolmogorov equations are invariant with respect to a suitable Lie group st...
We show an invariant Harnack inequality for a class of hypoelliptic ultraparabolic operators with un...
We give a direct proof of the Harnack inequality for a class ofdegenerate evolution operators which ...
Abstract. We show an invariant Harnack inequality for a class of hypoelliptic ultraparabolic operato...
We give a direct proof of the Harnack inequality for a class of degenerate evolution operators which...
We consider, for any odd positive integer k, the degenerate Partial Differential Equationu_t = u_xx ...
A class of linear second order hypoelliptic operators is studied. Existence and pointwise estimates...
Some results obtained in a recent study on a general class of hypoelliptic evolution operators are a...
We give a direct proof of the Harnack inequality for a class of degenerate evolution operators whic...
In this note, by analyzing the behavior at infinity of the matrix symbol of an invariant operator P ...
We study a notion of link of Lie groups suggested by the structure of the partial differential opera...