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- noun arithmetic, logic A notation for
arithmetic(and logical) formulaein which operations(respectively, quantifiersand 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 ANDB is written as AND A B.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a parenthesis-free notation for forming mathematical expressions in which each operator precedes its operands
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After the nationality of the logician Jan Łukasiewicz
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