What style/font is this?

Question

Does anyone know how to create numbering for Theorem/lemma/… like this one in the image below, also any idea about the font name?

enter image description here

Welcome to TeX.SX! You may have a look on our starter guide. — texenthusiast, May 21 '13 at 02:02
See How do I find out what fonts are used in a document/picture? — Werner, May 21 '13 at 06:43
Can you make your question clearer? Do you want to automate the creation of theorem environments with drop cap numbers? — hpesoj626, May 21 '13 at 15:05
I added an answer using the ntheorem package to create theorems with drop cap numbers. — Henri Menke, May 21 '13 at 18:20
The font is Palatino from Hermann Zapf or a clone of it. You can get it via package mathpazo or tgpagella. When using XeLaTeX or LuaLaTeX you could also load "Palatino Linotype" (ships with Windows), "TeX Gyre Pagella", "FPL Neu", just to name a few. — Tobias Schula, May 23 '13 at 16:00
NB : this is from http://publications.rwth-aachen.de/record/50390/files/Ensenbach_Marc.pdf#page=20 — Watson, Jan 10 '21 at 09:38

score 21 · Answer 1 · edited Jun 12 '17 at 18:00

21

Partial answer that addresses:

Dropped captital/number is solved by package lettrine. It also provides the small caps for Bezeichnungen:.
Color of the number (gray).
Alignment of the equation system (using environment alignat* of package amsmath. Just for fun I have added additional alignments for | and \in.
Letter spacing of the small caps text via \textls of package microtype.
As vertical bar \mid is used, see also question "\mid, | (vertical bar), \vert, \lvert, \rvert, \divides".

Also I have enlarged the number a bit for a better aligment with the top of the text.

\documentclass{article}
\usepackage[ngerman]{babel}
\usepackage[T1]{fontenc}
\usepackage[sc]{mathpazo}
\usepackage{tgpagella}
\usepackage{microtype}
\usepackage{amsmath}
\usepackage{lettrine}
\usepackage{xcolor}
\definecolor{theoremgray}{gray}{.5}

\setlength{\textwidth}{.85\textwidth}% just for reproducing the example

\begin{document}
\lettrine[
  loversize=.11,
  findent=0.5em,
  nindent=0pt,
]{\textcolor{theoremgray}{1.1.1}}{\textls{Bezeichnungen:}}
Ist $G$ eine (multiplikativ geschriebene) Gruppe, so f"uhrt man
f"ur beliebige $g \in G$ und $M, N \subseteq G$ die Bezeichnungen
\begin{alignat*}{4}
  &Mg &&= \{mg &&\mid m &&\in M\},\\
  &gN &&= \{gn &&\mid n &&\in N\},\\
  &MN &&= \{mn &&\mid m &&\in M, n \in N\}
\end{alignat*}
\end{document}

Missing:

Wrapping the visual markup into proper logical markup by defining a theorem style and setting up a theorem, for example.

The answer of Henri Menke shows this using package ntheorem as example.

edited Jun 12 '17 at 18:00

Moriambar

11,466

answered May 21 '13 at 03:56

Heiko Oberdiek

271,626

2

You should use \usepackage[sc]{mathpazo} for true small caps (and better kerning). – NauC May 21 '13 at 07:12
@NauC Thanks for the hint. Also interesting: "Different small-caps in mathpazo and tgpagella - which are better?" – Heiko Oberdiek May 21 '13 at 12:12
2

How can I obtain letterspacing for the small caps similar to the example picture by OP? – Henri Menke May 21 '13 at 12:15
2

@HenriMenke Thanks, missed that. Answer updated with using \textls of package microtype for letter spacing. – Heiko Oberdiek May 21 '13 at 12:19
2

alignment of the equations is not simply align* from amsmath -- the original example shows the left-hand side aligned flush left. can probably be done with alignat* but i haven't tried. – barbara beeton May 21 '13 at 14:04
1

@barbarabeeton Thanks, just for fun I have added additional alignments. – Heiko Oberdiek May 21 '13 at 14:57
1

I am not so sure about what the OP is really asking. It seems like OP wants to automate the creation of theorem-like environments with drop cap numbers. – hpesoj626 May 21 '13 at 15:02
1

@hpesoj626 Yes, this is missing, see my answer below "Missing:". – Heiko Oberdiek May 21 '13 at 15:10
1

addition of alignment of | closes up the spacing more than appropriat. maybe \mid instead of |? (anyhow, nice "drop cap" for the theorem number.) – barbara beeton May 21 '13 at 15:12
1

@HeikoOberdiek Oh. I totally missed that. Anyhow, I already added my plus +1 earlier. :) – hpesoj626 May 21 '13 at 15:19
@barbarabeeton Thanks, now using \mid. – Heiko Oberdiek May 21 '13 at 16:01

score 7 · Accepted Answer · edited Jun 12 '17 at 14:26

Remarks

I reproduced Heiko's answer using ntheorem. There is a tricky thing about it: You can't wrap the \lettrine into the [] of the \item as one would normally do for theorems. I get the error

! Argument of \@lettrine has an extra }.

if I do this. I don't know why, maybe somebody knows (Please comment).

Implementation

\documentclass{article}
\usepackage[ngerman]{babel}
\usepackage[T1]{fontenc}
\usepackage[sc]{mathpazo}
\usepackage{tgpagella}
\usepackage{microtype}
\usepackage{amsmath}
\usepackage{lettrine}
\usepackage{xcolor}
\usepackage{ntheorem}
\definecolor{theoremgray}{gray}{.5}
\makeatletter
\newtheoremstyle{mytheorem}%
    {\item[]\theorem@headerfont \lettrine[loversize=.11,findent=0.5em,nindent=0pt]{\textcolor{theoremgray}{##2}}{\textls{##1\theorem@separator}} }%
    {\item[]\theorem@headerfont \lettrine[loversize=.11,findent=0.5em,nindent=0pt]{\textcolor{theoremgray}{##2}}{\textls{##3\theorem@separator}} }
\makeatother
\theoremstyle{mytheorem}
\theoremheaderfont{\normalfont}
\theorembodyfont{\normalfont}
\theoremseparator{:}
\newtheorem{theorem}{Theorem}[subsection]
\setlength{\textwidth}{.85\textwidth}% just for reproducing the example
\begin{document}
\section{Sectiontitle}
\subsection{Subsectiontitle}
\begin{theorem}[Bezeichnungen]
    Ist $G$ eine (multiplikativ geschriebene) Gruppe, so f"uhrt man
    f"ur beliebige $g \in G$ und $M, N \subseteq G$ die Bezeichnungen
    \begin{alignat*}{4}
      &Mg &&= \{mg &&\mid m &&\in M\},\\
      &gN &&= \{gn &&\mid n &&\in N\},\\
      &MN &&= \{mn &&\mid m &&\in M, n \in N\}
    \end{alignat*}
\end{theorem}
\end{document}

Output

thanks for this code. I noticed a conflict with the package amsthm. for example try to use \begin{proof} something \end{proof} after adding the amsthm package. I got an error!. do you have an idea how can I fix this? — user31009, May 21 '13 at 20:29
Section 3.2.2 of the ntheorem user manual states, that it is incompatible with amsthm. Some of the features of amsthm are implemented in ntheorem and loading it with \usepackage[amsthm]{ntheorem} will emulate them (It will provides the environments plain, defintion, remark and proof). Conclusion: You can't use ntheorem and amsthm at once. (I would stick with ntheorem instead) — Henri Menke, May 21 '13 at 20:40

score 3 · Answer 3 · answered May 21 '13 at 02:00

3

Partial solution: the font is loaded with the package mathpazo.

enter image description here

answered May 21 '13 at 02:00

Sigur

37,330

3

Can you post the TeX code that you are using? – Heiko Oberdiek May 21 '13 at 03:07
@HeikoOberdiek, sorry, I deleted the file. But you just need to load the package with \usepackage{mathpazo}. – Sigur May 21 '13 at 03:11
Could you then please reproduce the file and upload the code? – Svend Tveskæg May 22 '13 at 15:06
@SvendTveskæg, do you want the code for the 3 equations? You can copy it from Heiko's answer below http://tex.stackexchange.com/a/115323/14757. – Sigur May 22 '13 at 17:06

What style/font is this?

3 Answers3