Uh, yeah, I still don't know what it means...I had to look it up...
Reverse Polish notation (RPN), also known as Polish postfix notation or simply postfix notation, is a mathematical notation in which operators follow their operands, in contrast to Polish notation (PN), in which operators precede their operands. It does not need any parentheses as long as each operator has a fixed number of operands. The description "Polish" refers to the nationality of logician Jan Łukasiewicz,[1] who invented Polish notation in 1924.[2][3]
The reverse Polish scheme was proposed in 1954 by Arthur Burks, Don Warren, and Jesse Wright[4] and was independently reinvented by Friedrich L. Bauer and Edsger W. Dijkstra in the early 1960s
..... No Polishman in the list.![]()

Let's just say math was NOT my forte in my school days - I got past it, but just barely. I did eventually get one of those Texas Instruments wonder calculators that cost a MINT in the mid 70's...


