Anderson, Brian D.O.Johnstone, Richard M.2026-01-022026-01-020191-2216ORCID:/0000-0002-1493-4774/work/174739669https://hdl.handle.net/1885/733802755Lyapunov stability results are summarized which are robust in character. These results are applied to examine the behaviour of adaptive identification and control algorithms applied to non-stationary plants where certain persistency of excitation conditions are satisfied.6en198110.1109/CDC.1981.2692570019695738