Lecture notes of Seminario Interdisciplinare di Matematica - Vol. VI (2007)

**Contents of Volume**
Title	Author	Pages
Finite difference methods for Hamilton-Jacobi equations on the Heisenberg group	Yves Achdou, Italo Capuzzo-Dolcetta	1–15
Two-dimensional almost-Riemannian manifolds	Andrei A. Agrachev, Ugo Boscain, Mario Sigalotti	17–31
Compensated compactness, div-curl theorem and H -convergence in general Heisenberg groups	Annalisa Baldi, Bruno Franchi, Maria Carla Tesi	33–47
Existence theorems for fully nonlinear equations in the Heisenberg group	Isabeau Birindelli, Bianca Stroffolini	49–55
Γ -convergence for strongly local Dirichlet forms in perforated domains with homogeneous Neumann boundary conditions	Marco Biroli, Nicoletta Tchou	57–67
Schauder estimates for parabolic and elliptic nondivergence operators of Hörmander type	Marco Bramanti	69–82
p -Lagrangians on fractals	Raffaela Capitanelli	83–91
Isoperimetric inequalities in the Heisenberg group and in the plane	Luca Capogna	93–106
Uniform estimates of fundamental solution and regularity of vanishing viscosity solutions of mean curvature equations in H^n	Luca Capogna, Giovanna Citti, Maria Manfredini	107–131
A generation result for a class of elliptic operators with unbounded coefficients in Lp spaces	Giovanni Cupini, Simona Fornaro	119–174
A Steiner formula in the Heisenberg group for Carnot-Charathéodory balls	Fausto Ferrari	133–143
Kolmogorov equations arising in finance: direct and inverse problems	Paolo Foschi, Andrea Pascucci	145–156
Lower bounds for solutions of degenerate parabolic equations	Ugo Gianazza, Sergio Polidoro	157–162
Semilinear subelliptic equations on rational Carnot groups	Annunziata Loiudice	163–170
On semigroups associated with degenerate elliptic operators with unbounded coefficients R^n	Luca Lorenzi	171–193
Minimal surfaces in three dimensional pseudo-Hermitian manifolds	Andrea Malchiodi	195–207
On positive solutions of hypoelliptic second order differential equations	Maria Alessandra Ragusa	209–216
Optimal regularity in lower dimensional obstacle problems	Sandro Salsa	217–226
Cone criterion for non-divergence equations modeled on Hörmander vector fields	Francesco Uguzzoni	227–241