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enter image description here

Can the above \zeta and \sum symbol be produced exactly in latex? If yes what package to use? Kindly help.

Thanks.

EDIT: This is not a duplicate. I am looking for a math typeface which gives summation symbol exactly as show in the image above.

C.S.
  • 1,379

1 Answers1

7
  1. With your reputation you should know you should provide a MWE.
  2. Why are you asking how \zeta and \sum symbols can be reproduced in LaTeX, if you already know their name?

If this code doesn't solve your problem, please edit your question and be more specific:

\documentclass{book}
\usepackage{amsmath, amssymb}
\begin{document}
\[
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \sum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
\]
\end{document}  

enter image description here

Edit:

As Mico said, this is the result with newtxmath package:

\documentclass{book}
\usepackage{newtxmath}
\DeclareMathOperator*{\mysum}{\text{\raisebox{-2pt}{\scalebox{2}{$\Sigma$}}}}
\begin{document}
    \[
    -\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \sum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
    \]
\end{document}

enter image description here

Eventually, you could create your own math operator.

Second edit

As you correctly pointed out, my first solution (\mysum) doesn't become smaller when it was not in display style.

I have created another command (\mynewsum) that scales according to the size of the \sum operator.

If you prefer my first solution for display style, you can use a mix of the previous two (see \myfinesum).

\documentclass{book}
\usepackage{amsmath, amssymb}
\usepackage{array}
\usepackage{booktabs}
\renewcommand*{\arraystretch}{3}

\usepackage{graphicx}
\usepackage{scalerel}
\DeclareMathOperator*{\mysum}{\raisebox{-2pt}{\scalebox{2}{$\Sigma$}}}
\DeclareMathOperator*{\mynewsum}{\scalerel*{\Sigma}{\sum}}
\DeclareMathOperator*{\myfinesum}{%
\mathchoice
  {\raisebox{-2pt}{\scalebox{2}{$\Sigma$}}}%
  {\scalerel*{\Sigma}{\sum}}%
  {\scalerel*{\Sigma}{\sum}}%
  {\scalerel*{\Sigma}{\sum}}
}

\begin{document}
\noindent
\begin{tabular}{l>{$\displaystyle}c<{$}>{$\textstyle}c<{$}>{$\scriptstyle}c<{$}>{$\scriptscriptstyle}c<{$}}
\toprule
&
\text{Display style}
&
\text{Text style}
&
\textstyle\text{Script style}
&
\textstyle\text{Scriptscript style}
\\[10pt]
\midrule
\textbackslash\texttt{mysum}
&
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \mysum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
&
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \mysum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
&
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \mysum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
&
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \mysum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
\\[10pt]
\textbackslash\texttt{mynewsum}
&
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \mynewsum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
&
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \mynewsum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
&
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \mynewsum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
&
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \mynewsum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
\\[10pt]
\textbackslash\texttt{myfinesum}
&
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \myfinesum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
&
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \myfinesum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
&
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \myfinesum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
&
-\frac{{\zeta}^{\prime}(s)}{\zeta(s)} = \myfinesum_{m\geq 1}\frac{\Lambda(n)}{{n}^{s}}
\\[10pt]
\bottomrule
\end{tabular}
\end{document} 

enter image description here

CarLaTeX
  • 62,716
  • Oops. How to make sure that this "sum" symbol only appears like this only in the displaymath mode? (that is the $$ $$ mode). Because if i use this command in the normal mode where i want "sum" to appear small, it doesn't happen :( – C.S. Apr 24 '17 at 06:00
  • 1
    @S.C. You're right, I have to improve my answer, but please wait because I have no time at the moment... Maybe someone else will answer before me... – CarLaTeX Apr 24 '17 at 06:18
  • Em, thanks for taking time and helping. I too thought of the same idea, but each time i don't use displaymath, i have to change the command from \mysum to \mynewsum :( This looks a bit hard :) – C.S. Apr 24 '17 at 11:22
  • @S.C. No, you can simply use \myfinesum everywhere, please look at this command in my last edit. – CarLaTeX Apr 24 '17 at 11:25
  • BTW, after defining \myfinesum when i give the command \renewcommand{\sum}{\myfinesum} why does it show an error? – C.S. Apr 24 '17 at 11:43
  • @S.C. You can't redefine \sum with a command which uses \sum. You have to save the old \sum under another name and then use this name in \renewcommand, see here: https://tex.stackexchange.com/q/47351/101651. – CarLaTeX Apr 24 '17 at 11:57