This time we are looking on the **crossword puzzle clue** for: *External.*

it’s A 8 letters **crossword definition**.

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## Possible Answers:
**OUTER**.

**OUTER**.

Last seen on: –USA Today Crossword – Sep 21 2022

–Thomas Joseph – King Feature Syndicate Crossword – Aug 27 2022

–Newsday.com Crossword – Aug 24 2021

–Thomas Joseph – King Feature Syndicate Crossword – Mar 10 2021

–Thomas Joseph – King Feature Syndicate Crossword – Sep 9 2020

–The Telegraph – QUICK CROSSWORD NO: 29,354 – May 4 2020

USA Today Crossword – Jan 10 2020

### 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: