1. There are other ways of producing postfix expressions from infix notation . 2. Expressions and equations are entered in standard algebraic infix notation . 3. The resulting infix notation blurs the syntactical difference between functions and operators. 4. Expressions use infix notation , with standard operator precedence. 5. To compete in this space it was decided to switch to Infix notation . 6. It uses the normal infix notation rather than RPN, which most HP scientific calculators use. 7. Compound terms with functors that are declared as operators can be written in prefix or infix notation . 8. It is common to regard formulas in infix notation as abbreviations for the corresponding formulas in prefix notation. 9. Written topics tested include " what does this program do ? ", digital electronics, infix notation . 10. "' Infix notation "'is the notation commonly used in arithmetical and logical formulae and statements.