publications

${L^p}$Liouville Theorems for Invariant Partial Differential Operators
in ${\mathbb{R}^n}$ (with E. Lanconelli), submitted.

Hardy type inequalities for $\Delta_\lambda$Laplacians (with S.Sonner), submitted.

A Liouvilletype Theorem on halfspaces for subLaplacians,
Proc. Amer. Math. Soc. 143(1) (2015), 239248.

Attractors met $X$elliptic operators (with S.Sonner), J. Math. Anal. Appl., 420 (2014), 407434.

An inverse mean value property for evolution equations (with E.Lanconelli and G.Tralli), Adv. Differential Equations, Vol. 19, Numbers 78 (2014), 783804.

Attractors for a class of semilinear degenerate
parabolic equations (with S.Sonner), J. Evol. Equ. 13 (2013), no.3, 675691.

Blaschke, Privaloff, Reade and Saks Theorems
for diffusion equations on Lie groups (with G.Tralli), Potential Anal. 38 (2013), no. 4, 11031122.

On semilinear $\Delta_\lambda$Laplace equation (with E.Lanconelli), Nonlinear Anal., 75 (2012), no.12, 46374649.

A control condition for a weak Harnack inequality, Nonlinear Anal. 75 (2012), no.11, 41984204.

Liouville
Theorem for X elliptic operators (with E.Lanconelli), Nonlinear Anal. 70 (2009), no.8, 29742985.

Liouville
Theorems for a class of linear second order operators with
nonnegative characteristic form (with E.Lanconelli),
Bound. Value Probl. 2007, Art. ID 48232, 16 pp.
 Link of
groups and Hörmander operators (with E.Lanconelli),
Proc. Amer. Math. Soc. 135 (2007), 20192030.
 Liouville
Theorems in halfspaces for parabolic hypoelliptic equations (with E.Lanconelli),
Ric. Mat. 55 (2006), no.2, 267282.

Oneside Liouville Theorems for a class of
hypoelliptic ultraparabolic equations (with E.Lanconelli),
Contemp. Math., 368 (2005), 305312, Amer. Math. Soc., Providence, RI, 2005.
 An invariant Harnack inequality for a class of hypoelliptic ultraparabolic equations (with E.Lanconelli),
Mediterr. J. Math. 1 (2004), no.1, 5180.
 Xelliptic operators and
Xcontrol distances (with E.Lanconelli), Contributions in honor of the memory of Ennio De Giorgi, Ricerche Mat. 49 (2000), suppl., 223243.