KKT conditions - Equality constraints












1












$begingroup$


I have an equality constraints as



$qquad qquad min_x f(x) \ qquad qquad s.t. quad Ax leq b \qquad qquad qquad x = h(x)$.



The KKT conditions of the minimization without the equality constraints is



$qquad qquad nabla f(x) + A^T u = 0, Ax < b \ qquad qquad u geq 0 quad &quad u^TAx = 0$.



Can I replace $x = H(x)$ in the above KKT conditions, and assume that the equality constraints are also satisfied?










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  • 2




    $begingroup$
    After replacing $x=h(x)$ you still have $x$ left in the objective that must satisfy the constraint, so no.
    $endgroup$
    – A.Γ.
    Jan 3 at 20:23


















1












$begingroup$


I have an equality constraints as



$qquad qquad min_x f(x) \ qquad qquad s.t. quad Ax leq b \qquad qquad qquad x = h(x)$.



The KKT conditions of the minimization without the equality constraints is



$qquad qquad nabla f(x) + A^T u = 0, Ax < b \ qquad qquad u geq 0 quad &quad u^TAx = 0$.



Can I replace $x = H(x)$ in the above KKT conditions, and assume that the equality constraints are also satisfied?










share|cite|improve this question









$endgroup$








  • 2




    $begingroup$
    After replacing $x=h(x)$ you still have $x$ left in the objective that must satisfy the constraint, so no.
    $endgroup$
    – A.Γ.
    Jan 3 at 20:23
















1












1








1





$begingroup$


I have an equality constraints as



$qquad qquad min_x f(x) \ qquad qquad s.t. quad Ax leq b \qquad qquad qquad x = h(x)$.



The KKT conditions of the minimization without the equality constraints is



$qquad qquad nabla f(x) + A^T u = 0, Ax < b \ qquad qquad u geq 0 quad &quad u^TAx = 0$.



Can I replace $x = H(x)$ in the above KKT conditions, and assume that the equality constraints are also satisfied?










share|cite|improve this question









$endgroup$




I have an equality constraints as



$qquad qquad min_x f(x) \ qquad qquad s.t. quad Ax leq b \qquad qquad qquad x = h(x)$.



The KKT conditions of the minimization without the equality constraints is



$qquad qquad nabla f(x) + A^T u = 0, Ax < b \ qquad qquad u geq 0 quad &quad u^TAx = 0$.



Can I replace $x = H(x)$ in the above KKT conditions, and assume that the equality constraints are also satisfied?







convex-optimization nonlinear-optimization karush-kuhn-tucker






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asked Jan 3 at 19:02









Majid MohammadiMajid Mohammadi

275




275








  • 2




    $begingroup$
    After replacing $x=h(x)$ you still have $x$ left in the objective that must satisfy the constraint, so no.
    $endgroup$
    – A.Γ.
    Jan 3 at 20:23
















  • 2




    $begingroup$
    After replacing $x=h(x)$ you still have $x$ left in the objective that must satisfy the constraint, so no.
    $endgroup$
    – A.Γ.
    Jan 3 at 20:23










2




2




$begingroup$
After replacing $x=h(x)$ you still have $x$ left in the objective that must satisfy the constraint, so no.
$endgroup$
– A.Γ.
Jan 3 at 20:23






$begingroup$
After replacing $x=h(x)$ you still have $x$ left in the objective that must satisfy the constraint, so no.
$endgroup$
– A.Γ.
Jan 3 at 20:23












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