nontrivial

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non·triv·i·al

 (nŏn-trĭv′ē-əl)
adj.
1. Not trivial; of some importance.
2. Mathematics Of, relating to, or being an expression in which at least one variable is not equal to zero.

nontrivial

(ˌnɒnˈtrɪvɪəl)
adj
not trivial; significant, important
References in periodicals archive ?
Jettisoning the side boosters is also "non trivial" a challenge.
When r is a prime other than 5, [psi](r) is the least number of [[sigma].sub.2][[sigma].sub.1.sup.-1] that should be juxtaposed in order to obtain a non trivial r-coloring, namely in THK(Z, [psi](r)).
When r is a prime other than 5, [psi](r) is the least number of [[sigma].sub.2][[sigma].sup.-1.sub.1] that should be juxtaposed in order to obtain a non trivial r-coloring, namely in THK(3, [psi](r)).
By Theorems 2.1.5, 2.2.2 and 2.3.4 of [5], there exists a trace preserving and strongly mixing action of G on some finite von Neumann algebra (Q, [tau]) which contains non trivial asymptotically invariant sequences and Folner sequences in the sense below.