Łukasiewicz notation, also known as prefix notation, is a mathematical notation in which operators precede their operands. This system eliminates the need for parentheses to indicate the order of operations, as the position of the operators and operands inherently defines the structure of the expression. It was developed by the Polish logician Jan Łukasiewicz in the 1920s. In Łukasiewicz notation, an expression like "3 + 4" would be written as "+ 3 4". This format is particularly useful in computer science and programming languages, as it simplifies the parsing of expressions and allows for easier implementation of algorithms. It is a key concept in formal logic and mathematical logic.