Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

refer to Corollary 3.2.7 in Lemma 7.2.4 #865

Merged
merged 1 commit into from
Sep 9, 2015
Merged

refer to Corollary 3.2.7 in Lemma 7.2.4 #865

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions hlevels.tex
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -331,6 +331,7 @@ \section{Uniqueness of identity proofs and Hedberg's theorem}
\end{lem}

\begin{proof}
This was essentially already proven in \cref{thm:not-lem}, but we repeat the argument.
Suppose $x:A+\neg A$. We have two cases to consider.
If $x$ is $\inl(a)$ for some $a:A$, then we have the constant function $\neg\neg A
\to A$ which maps everything to $a$. If $x$ is $\inr(t)$ for some $t:\neg A$,
Expand Down