irreducible
/ˌɪɹɪˈdjuːsɪbəl/adj
High School
1
Not able to be reduced or lessened.
2
Not able to be brought to a simpler or reduced form.
3
Unable to be factorized into polynomials of lower degree, as (x² + 1).
4
Whose numerator and denominator share no common factor greater than 1.
5
Unable to be factored into smaller integers; prime.
6
Whose only divisors are units and associates.
7
Inexpressible as the union of two proper algebraic subvarieties.
8
Not containing a sphere of codimension 1 that is not the boundary of a ball.
9
Impossible to divide further into representations of lower dimension by means of any similarity transformation.