(calculus) The study of calculus from the perspective of the theory of operators.

(military, psychiatry) The acute psychological trauma experienced in combat environments which can lead to combat fatigue.

plural of line of operations

plural of arithmetic operation

plural of operational definition

(algebra) An operation taking two operands.

(set theory) A mathematical operation that returns a set taking one or more sets as input.

(algebra) An operation taking one operand, such as the square, factorial or absolute value operation.

plural of binary operation

(arithmetic, computing) Any one of the four basic operations in arithmetic: addition, subtraction, multiplication or division; any one of said operations as implemented on a computer.