Revistes Catalanes amb Accés Obert (RACO)

Subelliptic Poincaré inequalities: The case $p < 1$

S. Buckley, P. Koskela, G. Lu


We obtain (weighted) Poincaré type inequalities for vector fields satisfying the Hörmander condition for $p < 1$ under some assumptions on the subelliptic gradient of the function. Such inequalities hold on Boman domains associated with the underlying Carnot-Carathéodory metric. In particular, they remain true for solutions to certain classes of subelliptic equations. Our results complement the earlier results in these directions for $p\ge 1$.

Text complet: PDF (English)