%0 Journal Article %J Atti Accad. Naz. Lincei Cl. Sci. Fis. Mat. Natur. Rend. Lincei (9) Mat. Appl. 18 (2007) 333-342 %D 2007 %T Gaussian estimates for hypoelliptic operators via optimal control %A Ugo Boscain %A Sergio Polidoro %X We obtain Gaussian lower bounds for the fundamental solution of a class of hypoelliptic equations, by using repeatedly an invariant Harnack inequality. Our main result is given in terms of the value function of a suitable optimal control problem. %B Atti Accad. Naz. Lincei Cl. Sci. Fis. Mat. Natur. Rend. Lincei (9) Mat. Appl. 18 (2007) 333-342 %G en_US %U http://hdl.handle.net/1963/1994 %1 2202 %2 Mathematics %3 Functional Analysis and Applications %$ Submitted by Andrea Wehrenfennig (andreaw@sissa.it) on 2007-08-09T13:14:42Z\\nNo. of bitstreams: 1\\n45-2007M.pdf: 181670 bytes, checksum: 6f262dccd2b3004cfd0b0b711bd011b2 (MD5) %R 10.4171/RLM/499