Earlier Post:
https://www.physicsforums.com/threa...dict-the-born-rule.946467/page-9#post-5994645
Throughout his papers Zurek proves his theorem from axioms A1-A3 that I listed earlier combined with a fourth axiom. The fourth axiom may be any of three I listed as B1-B3.
The paper I linked you to has the "best" version of Zurek's derivation, as it adopts axiom B3 as the fourth axiom, the only one with robust experimental confirmation. However this axiom means the proof no longer takes place within a Many-Worlds framework, but in the "Existential Interpretation", Zurek's own interpretation.
See
Zurek, W. (2010). Quantum Jumps, Born’s Rule, and Objective Reality. In: S. Saunders et al, ed.,
Many Worlds? Everett, Quantum Theory, and Reality, 1st ed. Oxford University Press, pp. 409-432.