The Tetragrammaton in Equilibrium is the main council and federal organisation of "clerics", an elite branch of government law enforcement having undergone special martial training.
A tetragrammaton in the novel Kiln People by David Brin is a technological interface to the human brain and/or "soul", copying what is called the "soul standing wave" (a concept apparently borrowed from some of Roger Penrose's writing) from a human being to a technologically sophisticated clay golem, which serves as a temporary duplicate for the copied human.
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