Here's a question from Kuratowski's "Set theory" (Chapter 7).
Given the ordinal equation $\omega^a=b+c$ $(c>0)$. How to prove that $c=\omega^a$?
Here's a question from Kuratowski's "Set theory" (Chapter 7).
Given the ordinal equation $\omega^a=b+c$ $(c>0)$. How to prove that $c=\omega^a$?
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