By use of maximum principle and auxiliary function method,the paper discusses the blow-up sets of the solutions of the ignition model in two cases,It is obtained that the solutions blow up in single point in nonsymmetric case and that the solutions blow up totally or at a couple of points in symmetric case.
LI Yarding (Faculty of Science, Xi’an Jiaotong University, Xi’an 710049, China)WU Jianhua (Department of Mathematics, Shaanxi Normal University, Xi’an 710062, China)
