The story
From pseudo- + contractive.
Etymology from Wiktionary, CC BY-SA 4.0.
pseudocontractive
Today it means: Satisfying the equation ||Tx - Ty|| <= ||x - y|| - α * ||x - y||² where T is the mapping that is pseudocontractive, x and y are points in the metric space, ||.|| denotes the norm in the metric space, and α is a constant. Full definition →