Inter-universal Teichmuller Theory I
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・Inserted a missing space in the first display of Remark 4.9.1, (i)


Inter-universal Teichmuller Theory II
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・In the second display of Remark 3.6.4, (iv), inserted the word "portion"


Inter-universal Teichmuller Theory III
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・Corrected misprints in the Introduction ("regarded a positive real multiple" ---> "regarded as a positive real multiple",
　"but rather with]" ---> "but rather] with")

・Added an additional reference at the end of Remark 3.3.2, (i)


Inter-universal Teichmuller Theory IV
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・In the discussion immediately following the first display of Step (v) of the proof of Theorem 1.10,
　replaced the phrase "the tensor product of log-shells under consideration" by more precise notation
　(2 instances)