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BUILT-IN MATHEMATICA SYMBOL

Nor

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.

Nor can be input in StandardForm and InputForm as . The character can be entered as Esc nor Esc or \[Nor]. »

Nor has attribute HoldAll, and explicitly controls the evaluation of its arguments. In Nor 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.

Enter using Esc nor Esc:

Out[1]=

Enter using Esc nor Esc:

Out[1]=

Out[2]//InputForm=

Nor with explicit True or False arguments will simplify:

Nor evaluates its arguments in order, stopping when an argument evaluates to True:

Symbolic transformations may not preserve argument ordering or Nor operations:

Find the Nor of two regions:

A cellular automaton based on Nor:

Simplify trees involving Nor:

Find the area of the complement of the union of sets given by algebraic conditions:

This shows the set:

Truth table for Nor:

Use BooleanConvert to expand in terms of And and Not:

The negation of Nor is equivalent to Or:

Nor of conditions in Boole functions: