# Questions tagged [polish-notation]

For questions on Polish notation. Polish notation, named for the Polish logician Jan Łukasiewicz, is a mathematical notation in which operators precede their operands.

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### Ambiguity in Reverse Polish notation

Given the infix form: 1 * 2 * 3 What is the Reverse Polish notation? As I see things, two valid answers are: ...
2k views

### Reverse Polish Notation with power

Perhaps I'm just not understanding RPN correctly, but whenever I translate something like 2^2^3 then I get 22^3^ But if I try ...
76 views

### Which One of These Logical Theses Does Not Hold for Relevant Logics With a Connective for Conjunction?

I write in Polish notation and have included fully infixed notation here also which indicates parsing order. For every relevant logic simplification fails: Simplifcation: CpCqp or [p$\rightarrow$(...
615 views

### Reverse Polish Notation and numbers $>9$

Excuse me for the newbish question in advance but how should I make sure I don't make a mistake converting from RPN to infix notation when I don't know if some of the numbers aren't two-digit ones or ...
419 views

### distributive law in polish notation

On page 18 "Logic as Algebra" Halmos&Givant wrote the distributive law in Polish notation as $$= \times a + bc + \times ab \times ac$$ I fail to see anything remarkable here, is there a ...
167 views

### PEDMAS in RPN needed?

In RPN do we still have to take into note the PEDMAS rules? For example these questions: 3 – 4 * 2 3 * 4 – 2 3 * (4 – 2) (3 – 4) * 2 3 – 4 + 2 Answers 342*- 34*...
534 views

### Calculate an Average in RPN (Reverse Polish Notation)

To calculate an average in reverse polish notation (RPN) is the following correct (assuming a-j are variables representing numbers): ...