Title: A partial solution of the isoperimetric problem for the Heisenberg group
Abstract: We provide a solution to the isoperimetric problem in the Heisenberg group ℍ n when the competing sets belong to a restricted class of C 2 graphs. Within this restricted class we characterize the isoperimetric profiles as the bubble sets (1.5) (modulo nonisotropic dilations and left-translations). We also compute the isoperimetric constant. 2000 Mathematics Subject Classification: 53C17, 49K20.