The CM postcode area, also known as the Chelmsford postcode area, is a group of 25 postcode districts in England, which are subdivisions of 16 post towns.M postcode area map, showing postcode districts in red and post towns in grey text, with links to nearby CB, CO, E, EN, IG, RM, SG and SS postcode areas.
Patterns have an underlying mathematical structure; indeed, mathematics can be seen as the search for regularities, and the output of any function is a mathematical pattern. Similarly in the sciences, theories explain and predict regularities in the world.
In modern mathematics, a function is defined by its set of inputs, called the domain; a set containing the set of outputs, and possibly additional elements, as members, called its codomain; and the set of all input-output pairs, called its graph.or example, we could define a function using the rule f (x) = x 2 by saying that the domain and codomain are the real numbers, and that the graph consists of all pairs of real numbers (x, x 2). The image of this function is the set of non-negative real numbers.