Absolute invariant - Aronhold's rule - Bracket ring - Chevalley-Iwahori-Nagata theorem - Concomitant - Contravariant bracket - Covariant bracket - Gram’s theorem - Hilbert-Mumford criterion - Lüroth’s theorem - Nagata counterexample - Nullform - Multilinear invariant - Semi-stable point - Symbolic method - Young-Deruyts development - Young's diagram - Young's frame