What are the stages of lacanian psychoanalysis?

Three main phases may be identified in Lacan's mature work: his Fifties exploration of the Imaginary and the Symbolic; his concern with the Real and the lost object of desire, the objet petit a, during the Sixties; and a final phase highlighting jouissance and the mathematical formulation of psychoanalytic teaching.

See also

https://www.academia.edu/33878426/The_Seminars_of_Jacques_Lacan

https://plato.stanford.edu/entries/lacan/

https://ijip.in/wp-content/uploads/2022/09/18.01.159.20221002.pdf

https://www.jstor.org/stable/25112297?typeAccessWorkflow=login