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n. An algebraic quantity that when raised to a certain power equals zero.

adj. Describing an element, of a ring, for which there exists some positive integer n such that xn = 0.

In mathematics, vanishing on being raised to a certain power. Thus, if i be such an expression in multiple algebra that i × i × i = 0, i is nilpotent

adj. equal to zero when raised to a certain power

"There is nothing inconsistent with this restriction, and the positive L_m in isolation generate a gauge symmetry; there is no anomaly in the positive sector and thus a nilpotent BRST operator."

.nillpotent algebra   

nilpotence    idempotent    nullipotent    nilpotency    nilpotently   

torsion-free    definitizable    2-hyperelementary    word-length    holomorphic