Ways to describe the algorithm. Types of operators

The algorithm and its properties. Ways to describe the algorithm
To explain the concept of "algorithm", it is important to define the concept of "algorithm performer". The algorithm is formulated based on a specific performer; the algorithm is a guide to action for the performer, so the meaning of the word "algorithm" is close in meaning to the meaning of the words "instruction" or "prescription". We can say that an algorithm is a clear and precise instruction to the performer to perform a certain sequence of actions to achieve a specified goal or solve a task, or an algorithm is an exact instruction that sets a computational process that begins with an arbitrary source data from a certain set of data possible for this process and is aimed at obtaining a result completely determined by these initial data.