What Does Polish Notation (PN) Mean?
Polish notation is a notation form for expressing arithmetic, logic and algebraic equations. Its most basic distinguishing feature is that operators are placed on the left of their operands. If the operator has a defined fixed number of operands, the syntax does not require brackets or parenthesis to lessen ambiguity.
Techopedia Explains Polish Notation (PN)
Polish notation was invented in 1924 by Jan Lukasiewicz, a Polish logician and philosopher, in order to simplify sentential logic. The idea is simply to have a parenthesis-free notation that makes each equation shorter and easier to parse in terms of defining the evaluation priority of the operators.
