# External

This time we are looking on the crossword puzzle clue for: External.
it’s A 8 letters crossword definition.
Next time when searching the web for a clue, try using the search term “External crossword” or “External crossword clue” when searching for help with your puzzles. Below you will find the possible answers for External.

We hope you found what you needed!
If you are still unsure with some definitions, don’t hesitate to search them here with our crossword puzzle solver.

## Possible Answers: OUTER.

### Random information on the term “External”:

The term external is useful for describing certain algebraic structures. The term comes from the concept of an external binary operation which is a binary operation that draws from some external set. To be more specific, a left external binary operation on S over R is a function f : R × S → S {\displaystyle f:R\times S\rightarrow S} and a right external binary operation on S over R is a function f : S × R → S {\displaystyle f:S\times R\rightarrow S} where S is the set the operation is defined on, and R is the external set (the set the operation is defined over).

The external concept is a generalization rather than a specialization, and as such, it is different from many terms in mathematics. A similar but opposite concept is that of an internal binary function from R to S, defined as a function f : R × R → S {\displaystyle f:R\times R\rightarrow S} . Internal binary functions are like binary functions, but are a form of specialization, so they only accept a subset of the domains of binary functions. Here we list these terms with the function signatures they imply, along with some examples: