# What font is this document? [duplicate]

can anyone tell me the name of this font used in this document? thanks in advance. ?

This fragment should prove without any doubt that the document used

\usepackage[upright]{fourier}


Here's a sample code.

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[french]{babel}

\usepackage[upright]{fourier}

\usepackage{amsmath}

\begin{document}

Si $z_0\in\mathbb{C}$, on a succéssivement
$z_0\in\mathcal{H}(f)\Longleftrightarrow \exists\theta\in[0,2\pi\mathclose{[} \quad \exists\varepsilon_1,\varepsilon_2\in\mathbb{U} \qquad z_0=\begin{bmatrix} \overline{\varepsilon_1}\cos\theta\\ \overline{\varepsilon_2}\sin\theta \end{bmatrix} \cdot \left( \begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix} \begin{bmatrix} \varepsilon_1\cos\theta \\ \varepsilon_2\sin\theta \end{bmatrix} \right)$

\end{document}


• Well recognized. – Heiko Oberdiek Nov 2 '16 at 23:45
• thanks a lot, what about the color? the document is not black, it's a little bit gray and smooth? how to apply the same effect for my documents? thanks. – onzepattes Nov 3 '16 at 13:16
• @onzepattes That's a printer effect. – egreg Nov 3 '16 at 13:17

There are several fonts in the image. An approximation:

\documentclass{article}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{upgreek}
\usepackage[sans]{dsfont}
\begin{document}
\textbf{1.3.}\quad Si $z_0 \in \mathds{C}$, on a successivement
\begin{gather*}
\overline{\upepsilon_1} \cos\uptheta,
\exists\uptheta \in [0; 2\uppi[\\
\mathds{C}, \mathds{U}\\
\mathcal{H}(f) \cdot \mathcal{L}_{\text{E}}\\
\Longleftrightarrow \boxed{\left\{ 0 \leqslant \frac{1}{2}\right\}}
\end{gather*}
\end{document}


The set symbols by \mathds of package dsfont are close, but the result of \mathcal is quite different.

• No, there's just one font family. Euler and dsfont are out of the question. – egreg Nov 2 '16 at 23:26