Robinson, DerekSikora, Adam2015-12-082015-12-081424-3199http://hdl.handle.net/1885/31275We examine the validity of the Poincaré inequality for degenerate, second-order, elliptic operators H in divergence form on {Mathematical expression}. We assume the coefficients are real symmetric and {Mathematical expression} for some {Mathematical expr201410.1007/s00028-014-0227-52015-12-08