Editing Exclusive or (section)

==Definition==
[[File:Variadic logical XOR.svg|thumb|220px|Each row of this binary [[Walsh matrix]] is the truth table of the [[variadic function|variadic]] XOR of the arguments shown on the left. <small>E.g. row AB corresponds to the 2-circle, and row ABC to the 3-circle Venn diagram shown above. (As in the Venn diagrams, white is false, and red is true.)</small>]]
The [[truth table]] of <math>A\nleftrightarrow B</math> shows that it outputs true whenever the inputs differ:

{{2-ary truth table|0|1|1|0|<math>A\nleftrightarrow B</math>}}