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Constraint (mathematics)
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<p>In <a href="/facts/Mathematics/pxTouaz4">mathematics</a>, a constraint is a condition of an <a href="/facts/Optimization_(mathematics)/oRn8Iv5I">optimization</a> problem that the solution must satisfy. There are several types of constraints—primarily <a href="/facts/Equality_(mathematics)/AQCuumLg">equality</a> constraints, <a href="/facts/Inequality_(mathematics)/qkze4zdI">inequality</a> constraints, and <a href="/facts/Integer_programming/MDaaadoA">integer constraints</a>. The set of <a href="/facts/Candidate_solution/cJUKNCmM">candidate solutions</a> that satisfy all constraints is called the <a href="/facts/Feasible_set/cJUKNCmM">feasible set</a>. </p>