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 >