⟺
Symbol | Format | Data |
---|---|---|
⟺ | Code Point | U+27FA |
TeX | \iff |
|
SVG |
The if-and-only-if symbol is used as a logical statement in math. Typically the symbol is used in an expression like:
In plain language, this means that if is true, then must be true and if is false, then must be false.
Long left right arrow symbol.
Long left double arrow symbol.
The long right double arrow symbol denotes logical implication in math.