# Fonts and 'analog' clock in Emily Riehl's 2020 ACT conference slides

I was recently looking at these slides made by Emily Riehl for the 2020 edition of the Applied Category Theory conference.

Here's a screenshot of one of the slides:

Is this a known template? And if so, where can I find it?

Otherwise, does anyone know which font is this? I've tried looking online via some 'pdf font readers' with no luck. I am also interested in the 'clock' displayed in the top right; it changes as the slides advance. Any help would be much appreciated.

• Similar to clock, someone asked for progress bar: tex.stackexchange.com/questions/567258 Mar 3 at 8:53
• I do something similar in ConTeXt for my slides using the visualcounter module (which I wrote). This is for ConTeXt and uses Metapost for drawing. The main advantage is that it can easily hook into any counter (and not just page number). See the manual for more examples of counters. Mar 6 at 4:53

I presume David answered your font related questions? The "analog clock" really is just a pie chart. Try this:

\documentclass{beamer}
\usepackage{tikz,pgf-pie}

\newcommand\pieofprogress  {%
\begin{tikzpicture}
\tikzset{lines/.style={draw=none}}
\pie[   rotate=90,
hide number,
sum=auto,
color={lime,cyan},
style={lines}
]   {
}
\end{tikzpicture}
}

\begin{document}
\begin{frame}{Frame \#1}
\begin{columns}
\column{0.85\textwidth}
\centering  This is number one,
and the fun hast just begun …
\column{0.15\textwidth}
\pieofprogress
\end{columns}
\end{frame}

\begin{frame}{Frame \#2}
\begin{columns}
\column{0.85\textwidth}
\centering  This is number two,
and I'm taking off her shoe …
\column{0.15\textwidth}
\pieofprogress
\end{columns}
\end{frame}

\begin{frame}{Frame \#3}
\begin{columns}
\column{0.85\textwidth}
\centering  This is number three,
and my hand is on her knee …
\column{0.15\textwidth}
\pieofprogress
\end{columns}
\end{frame}

\begin{frame}{Frame \#4}
\begin{columns}
\column{0.85\textwidth}
\centering  This is number four,
and she’s asking me for more …
\column{0.15\textwidth}
\pieofprogress
\end{columns}
\end{frame}
\end{document}


You'll probably want to stick it in your header or footer theme or some other appropriate template, but the principle should be clear.

• Great; I am not on my PC right now but I will try this and report back (or accept the answer if everything works). Thanks! Mar 2 at 20:12
• This is great; one last question, do you know how to avoid the having the black lines? E.g. if I set the colors to red and blue, the two slices of the pie are delimited by black lines. I can set lines/.style={draw=white, thin} and it kind of does trick, but how could I make the lines vanish altogether? Mar 2 at 23:27
• Sure. Just use draw=none. I have revised my answer above. Mar 3 at 6:30
• One more thing: I have only now taken a look at the original slide deck and noticed that her pie chart progresses counter-clockwise. I find that less intuitive, so my example does not :) Mar 3 at 6:41
• awesome, many thanks for taking the time to answer :) I will award the bounty as soon as its available. Cheers. Mar 3 at 6:43

it's made with lualatex and beamer using these fonts (not all of which are free):

\$pdffonts matrices.pdf
name                                 type              encoding         emb sub uni object ID
------------------------------------ ----------------- ---------------- --- --- --- ---------
RWJBVP+GillSans-Light                CID TrueType      Identity-H       yes yes yes     18  0
ALDFDQ+LatinModernMath-Regular       CID Type 0C       Identity-H       yes yes yes     19  0
MOBCJY+LatinModernMath-Regular       CID Type 0C       Identity-H       yes yes yes     20  0
AIZVPP+MnSymbol10                    Type 1            Custom           yes yes no      33  0
AIZVPP+MnSymbol10                    Type 1            Custom           yes yes no      34  0
MYTKLN+LatinModernMath-Regular       CID Type 0C       Identity-H       yes yes yes     35  0

• Great, thanks! Regarding the clock gadget, would you by any chance know how is it implemented? I've tried searching this site but haven't seen anything in this 'minimalistic' style. Feb 28 at 15:42