Alternative spelling of nontrivial

(group theory) The unique group (up to isomorphism) consisting of a single element (which is the identity element).

(topology) A topology consisting only of the empty set and the underlying set.

plural of trivial solution

(linear algebra) the answer ⃑x=⃑0 to a linear system A⃑x=⃑0

(computing, database normalization) A functional dependency of an attribute on a superset of itself.

(number theory) An absolute value (or norm) for a field which is defined to be equal to one for any element of the field other than the field's zero, for which it is defined to be equal to zero.

plural of trivial functional dependency

plural of trivial absolute value