A jotted comment

noun

1. Annotation, note
2. The act, process, method, or an instance of representing by a system or set of marks, signs, figures, or characters
3. A system of characters, symbols, or abbreviated expressions used in an art or science or in mathematics or logic to express technical facts or quantities

noun

1. A system of expressing numbers in which the digits are arranged in succession, the position of each digit has a place value, and the number is equal to the sum of the products of each digit by its place value

noun

1. Reverse polish notation

noun

1. A system of representing mathematical and logical operations in which the operands precede the operator and which does not require the use of parentheses

   "(3 + 5) − (2 + 1) in reverse Polish notation is expressed as 3 5 + 2 1 + −"

noun

1. A widely used floating-point system in which numbers are expressed as products consisting of a number between 1 and 10 multiplied by an appropriate power of 10 (as in 1.591 × 10⁻²⁰)