The Polish notation reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Polish notation

Polish notation, also known as prefix notation was created by Jan Łukasiewicz. Operators are placed before operands.

Np   negation ~ p  

Kpq  conjunction p ∧ q  

Apq  disjunction p ∨ q  

Cpq  material implication p → q  

Epq  material equivalence      p ↔ q  

PxFx universal quantifier ∀ x, Fx  

SxGx existential quantifier ∃ x, Gx

See also: Reverse Polish Notation, Infix notation

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