IN MATH: 1. n. the function, or rule which produces the "greatest integer less than or equal to the number" operated upon, symbol [x] or sometimes [[x]].

The greatest integer function is a piece-wise defined function.

If the number is an integer, use that integer.
If the number is not an integer, use the next smaller integer.
```Examples:
number		|	the greatest integer less than or equal to the number
x		|	  [x]
4		|	  [4] = 4
4.4		|	  [4.4] = 4
-2		|	  [-2] = -2
-2.3	|	  [-2.3] = -3 ```
 See: More Examples of Composite Functions Absolute Value Function, |x| What's a Function? - Index on topics like "How Functions Are Composed or Created", "Polynomial & Rational Functions" - Function and Relation Library - Many functions w/their features & graphs

IN ENGLISH: 1. as defined above.

APPLICATIONS:

1. Complete given [x], the greatest integer less than or equal to a number.
a.) [6.2]
b.) [-6.2]
2. List an application, use, of this function.

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