Set and Interval Notation

The following set and interval notation can be entered in Show My Work boxes.

Note In addition to the keyboard shortcuts listed in this topic, some symbols can be typed using the keyboard shortcuts for your operating system; for example, you can press ALT + 0247 on Windows to type ÷.
Notation Keyboard Button Notes
Set delimiters (braces) {a,b A closing brace is automatically inserted.
Closed interval (brackets) [a,b A closing bracket is automatically inserted.
Open interval (parentheses) (a,b Symbols > open interval button A closing parenthesis is automatically inserted.
Empty set Operators >
Union Operators >
Intersection Operators >
Subset Operators >
Superset Operators >
Element of Operators >
Not an element of Operators >