Depending on the mathematical notation being used the position of an operator in relation to its operand(s) may vary.
Below is a comparison of three different notations — all represent an addition of the numbers '1' and '2' In a mathematical expression, the order of operation is carried out from left to right.
Start at the left most value, that is, 4, and scan your eyes to the right and search for the first exponent you come across.
So we move on to the next order of operation, i.e., addition and subtraction, which have the same precedence and are done left to right.
It is important to carry out the order of operation in accordance with rules set by convention.
The reader will arrive at the correct value for the expression if and only if each operation is carried out in the proper order.
Higher arities are less frequently denominated through a specific terms, all the more when function composition or currying can be used to avoid them.
Other terms include: In computer programming languages, the definitions of operator and operand are almost the same as in mathematics.
The operand may be a processor register, a memory address, a literal constant, or a label.