KKT conditions - Equality constraints












1














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


















  • 2




    After replacing $x=h(x)$ you still have $x$ left in the objective that must satisfy the constraint, so no.
    – A.Γ.
    2 days ago


















1














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


















  • 2




    After replacing $x=h(x)$ you still have $x$ left in the objective that must satisfy the constraint, so no.
    – A.Γ.
    2 days ago
















1












1








1







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













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






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked 2 days ago









Majid Mohammadi

275




275








  • 2




    After replacing $x=h(x)$ you still have $x$ left in the objective that must satisfy the constraint, so no.
    – A.Γ.
    2 days ago
















  • 2




    After replacing $x=h(x)$ you still have $x$ left in the objective that must satisfy the constraint, so no.
    – A.Γ.
    2 days ago










2




2




After replacing $x=h(x)$ you still have $x$ left in the objective that must satisfy the constraint, so no.
– A.Γ.
2 days ago






After replacing $x=h(x)$ you still have $x$ left in the objective that must satisfy the constraint, so no.
– A.Γ.
2 days ago












0






active

oldest

votes











Your Answer





StackExchange.ifUsing("editor", function () {
return StackExchange.using("mathjaxEditing", function () {
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
});
});
}, "mathjax-editing");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "69"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});














draft saved

draft discarded


















StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3060883%2fkkt-conditions-equality-constraints%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown

























0






active

oldest

votes








0






active

oldest

votes









active

oldest

votes






active

oldest

votes
















draft saved

draft discarded




















































Thanks for contributing an answer to Mathematics Stack Exchange!


  • Please be sure to answer the question. Provide details and share your research!

But avoid



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


Use MathJax to format equations. MathJax reference.


To learn more, see our tips on writing great answers.





Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


Please pay close attention to the following guidance:


  • Please be sure to answer the question. Provide details and share your research!

But avoid



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


To learn more, see our tips on writing great answers.




draft saved


draft discarded














StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3060883%2fkkt-conditions-equality-constraints%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown





















































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown

































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown







Popular posts from this blog

1300-talet

1300-talet

Display a custom attribute below product name in the front-end Magento 1.9.3.8