Editing Unit (section)

===Mathematics===
* Unit number, the number [[1]]
* Unit, [[identity element]]
* [[Unit (ring theory)]], an element that is invertible with respect to ring multiplication
* Unit, a [[tuple]] of length 0; an empty tuple
* [[Statistical unit]], a data point on which statistical analysis is performed
* [[Unit angle]], a full turn equal to an angle of 1
* [[Unit circle]], a circle with a radius of length 1
* [[Unit cube]], a cube with sides of length 1
* [[Unit fraction]], a reciprocal of a positive integer
* [[Unit imaginary number]], square root of negative 1   <math>(\sqrt{-1})</math>
* [[Unit impulse]], an impulse of height 1
* [[Unit interval]], an interval of distance 1
* [[Unit matrix]], a diagonal matrix such that all elements on the main diagonal are 1 and all the others are zero
* [[Unit round-off]], an upper bound on the relative error due to rounding in floating point 
* [[Unit set]], a singleton, a set with exactly 1 element
* [[Unit sphere]], a sphere with a radius of length 1
* [[Unit square]], a square with sides of length 1
* [[Unit vector]], a vector with length equal to 1
* [[Unit type]], a type allowing only one value in type theory