- Adjective, Polish notation
Etymology: After the nationality of the logician w:Jan Åukasiewicz, Jan Åukasiewicz
- (context, arithmetic, logic) A notation for arithmetic (and logical) formulae in which operations (respectively, quantifiers and operands) are written immediately before their operands, used to avoid the need for parentheses; for example, 3
- (4 + 7) is written as
- 3 + 4 7 and A AND B is written as AND A B.
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