idempotencyEtymologyFrom Latin roots, idem (“same”) + potency (“power”).idempotency means idempotence. Lexicurio rates it Sui generis — a strength score of 87 out of 100.nounIdempotence.“The electron number constraint unlike the idempotency constraint can be represented by a single equation. For this reason, one can properly incorporate this constraint using a Lagrange multiplier and defining an effective chemical potential”