Talk:Rathjen's psi function

why isnt there a page for rathjens other ocf

isnt there another one using the weakly compact cardinal ~2025-37224-73 (talk) 07:23, 29 November 2025 (UTC)

yes there is. Why it doesn't have an article on Wikipedia, I have 4-4 clue ~2025-44098-58 (talk) 01:02, 31 December 2025 (UTC)

Error

the small Rathjen ordinal is $\psi _{\Omega }(\chi _{\varepsilon _{M+1}}(0))$ I think. $\psi _{\Omega }(\chi _{\varepsilon _{M}+1}(0))$ is just $\psi _{\Omega }(\chi _{M+1}(0))$ ~2025-44098-58 (talk) 20:38, 15 March 2026 (UTC)