TY - JOUR AU - Amster, Pablo AU - Haddad, Julián PY - 2013/04/22 Y2 - 2024/03/29 TI - A Hartman-Nagumo type condition for a class of contractible domains JF - Topological Methods in Nonlinear Analysis JA - TMNA VL - 41 IS - 2 SE - DO - UR - https://apcz.umk.pl/TMNA/article/view/TMNA.2013.013 SP - 287 - 304 AB - We generalize an existence result on second order systems with a nonlinear term satisfying the so-called Hartman-Nagumo condition. The generalization is based on the use of Gauss second fundamental form and continuation techniques. ER -