Not able to be brought to a simpler or reduced form.
Impossible to divide further into representations of lower dimension by means of any similarity transformation.
Unable to be factorized into polynomials of lower degree, as (x² + 1).
Unable to be factored into smaller integers; prime.
Whose numerator and denominator share no common factor greater than 1.
Not able to be reduced or lessened.
that its only divisors are units and associates.
Not containing a sphere of codimension 1 that is not the boundary of a ball.
Such a polynomial
Impossible to assuage