supported by the National Natural Science Foundation of China(10901106);the Natural Science Foundation of Shanghai Municipality,China(09ZR1423200);the Innovation Program of Shanghai Municipal Education Commission(09YZ150);the E-Institutes of Shanghai Municipal Education Commission(E03004);the Shanghai Leading Academic Discipline Project(S30405)
For the nonlinear bifurcation problems with two-dimensional null space,we propose an extel1ded system f which is generally not regular’ Applylng the pseudoarc-length homotopy continuatlon algorlthm on the singular pr...