Proof-theoretic strengths of the well ordering principles
classification
🧮 math.LO
keywords
proof-theoreticcorrectionsequalfixedfunctionsleastmademoreover
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In this note the proof-theoretic ordinal of the well-ordering principle for the normal functions ${\sf g}$ on ordinals is shown to be equal to the least fixed point of ${\sf g}$. Moreover corrections to the previous paper are made.
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