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  • || || ... is the logical OR function. It evaluates its arguments in order, giving True immediately if any of them are True, and False if they are all False.
  • Or[ , , ... ] can be input in StandardForm and InputForm as ... . The character can be entered as ||, or or \[Or].
  • Or evaluates its arguments in a non-standard way (see Section A.4.2).
  • Or gives symbolic results when necessary. It applies no simplification rules, except removing initial arguments that are False.
  • See the Mathematica book: Section 1.5.6.
  • See also: Xor, LogicalExpand.

    Further Examples

    This uses the shorthand notation for Or.