From 927fe04b9bc95239bc6e6506e74bd47d6edbe0b0 Mon Sep 17 00:00:00 2001 From: Gregor Kleen Date: Wed, 3 Feb 2016 21:24:04 +0100 Subject: minor corrections --- provider/posts/simmons-intro-to-cat-t/1.2.md | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/provider/posts/simmons-intro-to-cat-t/1.2.md b/provider/posts/simmons-intro-to-cat-t/1.2.md index c714f81..e180c6d 100644 --- a/provider/posts/simmons-intro-to-cat-t/1.2.md +++ b/provider/posts/simmons-intro-to-cat-t/1.2.md @@ -136,6 +136,7 @@ A \arrow[r, "f"] & B \arrow[r, "g"] & C \\ \bar{\bar{A}} \arrow[u, hook] \arrow[ru, "\rest{f}{\bar{\bar{A}}}" description] & & \\ \end{tikzcd} $$ +where all restricted versions of $f$, $g$, and $h$ are total. Extending the above to three partial functions $f : A \to B$, $g : B \to C$, and $h : C \to D$: $$ @@ -160,7 +161,7 @@ $$ \begin{aligned} \Phi : \ca{Pfn} & \to \ca{Set_\bot} \\ A & \mapsto A \cup \{ \bot_A \} \\ -\begin{tikzcd} +f\ \text{s.t.} \begin{tikzcd} A \arrow[r, "f"] & B \\ \bar{A} \arrow[u, hook] \arrow[ru, "\rest{f}{\bar{A}}" description] & \end{tikzcd} & \mapsto \begin{aligned} @@ -176,5 +177,7 @@ A & \mapsto A - \{ \bot \} \\ f & \mapsto \rest{f}{\left ( A - \{ \bot \} \right )} \end{aligned} $$ +where $\rest{f}{\bar{A}}$ is total. + -- cgit v1.2.3