BUILT-IN MATHEMATICA SYMBOL

Nor

Nor[e₁, e₂, ...]
is the logical NOR function. It evaluates its arguments in order, giving False immediately if any of them are True, and True if they are all False.

Details Details

Nor[e₁, e₂, ...] can be input in StandardForm and InputForm as . The character can be entered as EscnorEsc or \[Nor]. »
Nor[e₁, e₂, ...] is equivalent to Not[Or[e₁, e₂, ...]]. »
Nor has attribute HoldAll, and explicitly controls the evaluation of its arguments. In Nor[e₁, e₂, ...] the are evaluated in order, stopping if any one of them is found to be True. »
Nor gives symbolic results when necessary, removing initial arguments that are False.
Nor is not Flat.