Positive solutions for nonlinear systems of third-order generalized sturm-liouville boundary value problems with (p1,p2,ldots,pn)-laplacian

Document Type : Research Articles

Authors

1 Dept of Math. Univ of Mazandaran University

2 Department of Mathematics, Faculty of Sciences Razi University, 67149 Kermanshah, Iran

Abstract

In this work, by
employing the Leggett-Williams fixed point theorem, we study the
existence of at least three positive solutions of boundary value
problems for system of third-order ordinary differential equations
with (p1,p2,ldots,pn)-Laplacian
begin{eqnarray*}
left { begin{array}{ll} (phi_{p_i}(u_i''(t)))'  +  a_i(t) f_i(t,u_1(t), u_2(t), ldots, u_n(t)) =0 hspace{1cm} 0  leq t leq 1,
 alpha_i u_i(0) - beta_i u_i'(0) = mu_{i1} u_i(xi_i),hspace{0.2cm}
 gamma_i u_i(1) + delta_i u_i'(1) = mu_{i2} u_i(eta_i), hspace{0.5cm}
  u_i''(0) = 0,
end{array} right.
end{eqnarray*}
where phipi(s)=|s|pi2s,, are pi-Laplacian
operators, pi>1,0<xii<1,0<etai<1 and mui1,mui2>0 for i=1,2,ldots,n.

Keywords