Editing Solution set (section)

== Examples ==
* The solution set of the single equation <math>x=0</math> is the [[singleton set]] <math>\{ 0 \}</math>.
* Since there do not exist numbers <math>x</math> and <math>y</math> making the two equations <math display="block">\begin{cases} x + 2y = 3,&\\   x + 2y = -3 \end{cases}</math> simultaneously true, the solution set of this system is the {{nowrap|[[empty set]] <math>\emptyset</math>.}}
* The solution set of a [[constrained optimization problem]] is its [[feasible region]].
* The truth set of the predicate <math>P(n): n \mathrm{\ is\ even}</math> is <math>\{ 2,4,6,8,\ldots \}</math>.