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- n. Plural form of idempotent.
Sorry, no etymologies found.
He was interested in the structure of rings of linear operators and realized that the central idempotents, that is, the operators E that commuted with all other operators in the ring under multiplication (that is, EL = LE for all L in the ring) and which were idempotent under multiplication
In a natural way, the central idempotents formed a Boolean algebra.