mirror of https://github.com/zcash/zips.git
ExtractP(\ZeroP) should be 0, and ExtractP^\bot(\bot) should be \bot.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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@ -10721,7 +10721,7 @@ Define $\ExtractP \typecolon \GroupP \rightarrow \GroupPx$ such that
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\vspace{-1ex}
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\begin{formulae}
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\item $\ExtractP\big(\ZeroP\big) = \bot$
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\item $\ExtractP\big(\ZeroP\big) = 0$
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\item $\ExtractP\big((x, y)\big) = x \bmod \ParamP{q}$.
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\end{formulae}
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@ -10730,7 +10730,7 @@ We also define $\ExtractPbot \typecolon \maybe{\GroupP} \rightarrow \maybe{\Grou
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\vspace{-1ex}
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\begin{formulae}
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\item $\ExtractPbot\big(\bot\big) = 0$
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\item $\ExtractPbot\big(\bot\big) = \bot$
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\item $\ExtractPbot\big(P \typecolon \GroupP\big) = \ExtractP(P)$.
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\end{formulae}
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@ -14217,6 +14217,10 @@ Peter Newell's illustration of the Jubjub bird, from \cite{Carroll1902}.
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\historyentry{2021.1.23}{}
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\begin{itemize}
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\nufive{
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\item Correct errors in the definitions of $\ExtractP$ and $\ExtractPbot$ in \crossref{concreteextractorpallas}:
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$\ExtractP(\ZeroP)$ should be $0$, and $\ExtractPbot(\bot)$ should be $\bot$.
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}
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\item Fix some URLs in references.
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\end{itemize}
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