Why Don't Computer Scientists Learn Math?

Re:Why Don't Computer Scientists Learn Math? by gravypod on Saturday November 19, 2016 @11:55AM (#12994260)

Or there could be a standardized notation for expressing functions and the concept of mapping can be derived from taking a function and applying it to a set of elements.

Function and Map are different concepts that should not be described together.

In CS I'd just say

   B = map(some_function, A)

B is the Mapping of `some_function` over the elements in A.

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Re:Why Don't Computer Scientists Learn Math? by gizmo686 on Saturday November 19, 2016 @12:37PM (#12994484)

>Function and Map are different concepts that should not be described together

Not in this context. Assuming you are using `map` in the CS sense, B is what is called the "image" of some_function (over the domain A).

In math, a function is a mapping.

Consider the type of `some_function`. In C like notation, it would be `foo some_function(goo x)`. Which indicates that some_function takes an arguement of type `goo` and returns a value of type `foo`. In other words, some_function maps Goo to Foo (where Goo and Foo represent the set of all values of type goo and foo).

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