Polish notation, also known as prefix notation, is a mathematical notation in which operators precede their operands. This means that instead of writing an expression like "3 + 4", it would be written as "+ 3 4". This format eliminates the need for parentheses to indicate the order of operations, as the position of the operators and operands inherently defines it. One of the main advantages of Polish notation is its simplicity in computer programming and evaluation. It allows for easier parsing and reduces ambiguity in expressions, making it particularly useful in stack-based programming languages and compilers.