Interval-Notation.md

layout	title
page	Interval Notation

The syntax for ranges of values follows this format.

bound type	lower bound	(comma)	upper bound	bound type
[ or (	value1	,	value2	) or ]

The following table describes the meaning of each syntax element.

| Symbol | Meaning | ---------------- | ( | value is greater than value1 | [ | value is greater than or equal to value1 | value1 | lower bounding value or empty if unbounded | , | comma separates value1 and value2 | value2 | upper bounding value or empty if unbounded | ) | value is less than value2 | ] | value is less than or equal to value2

Examples

| Range | Defined Set |------------------- | [1,3] | 1 <= value <= 3 | (1,3] | 1 < value <= 3 | [1,3) | 1 <= value < 3 | (1,3) | 1 < value < 3 | (a,d) | strings greater than a and less than d (for example, aardvark and czar would fit within these bounds) | ( ,1] | value <= 1 (empty means unbounded) | [3, ) | value >= 3 (empty means unbounded)

For more information on intervals see the article on Wikipedia.