Changing Number Font Into Sans Serif

Question

I want to use Libertine Sans Serif numbers (only numbers) in math font. Can i get this result using a command like this:

    \DeclareSymbolFont{numbers}{T1}{libertine}{m}{n}
    \SetSymbolFont{numbers}{bold}{T1}{libertine}{bx}{n}
    \DeclareMathSymbol{0}\mathalpha{numbers}{"30}
    \DeclareMathSymbol{1}\mathalpha{numbers}{"31}
    .
    .

Example:

\documentclass[11pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage{libertine}
\renewcommand*\familydefault{\sfdefault} 
\usepackage[libertine,liby,libaltvw,vvarbb]{newtxmath}
\usepackage[T1]{fontenc}

%\DeclareSymbolFont{numbers}{T1}{libertine-SF}{m}{n}
%\SetSymbolFont{numbers}{bold}{T1}{libertine-SF}{bx}{n}
%\DeclareMathSymbol{0}\mathalpha{numbers}{"30}
%\DeclareMathSymbol{1}\mathalpha{numbers}{"31}
%\DeclareMathSymbol{2}\mathalpha{numbers}{"32}
%\DeclareMathSymbol{3}\mathalpha{numbers}{"33}
%\DeclareMathSymbol{4}\mathalpha{numbers}{"34}
%\DeclareMathSymbol{5}\mathalpha{numbers}{"35}
%\DeclareMathSymbol{6}\mathalpha{numbers}{"36}
%\DeclareMathSymbol{7}\mathalpha{numbers}{"37}
%\DeclareMathSymbol{8}\mathalpha{numbers}{"38}
%\DeclareMathSymbol{9}\mathalpha{numbers}{"39}

\begin{document}

\noindent 1234567890 TEXT\\
$1234567890$ MATH\\
is it possible to make numbers in math as in text.

\end{document}

Honestly, I don't know. But confront your line 2 with \SetSymbolFont{numbers}{bold}{T1}{phv}{bx}{n}: it may be necessary a 3-digit string like phv to identify the font (libertine in your case). — MattAllegro, Jun 16 '14 at 19:37
Please, make a minimal working example (MWE); it's important to know how you load the Libertine fonts. — egreg, Jun 16 '14 at 20:04

score 6 · Accepted Answer · answered Jun 16 '14 at 20:24

The internal font family name for the sans serif font is available as \biolinum@family. The string numbers would probably be good, but I prefer to call it sfnumbers.

Note that \familydefault is usually defined as \long, so \renewcommand should be used, not \renewcommand*.

\documentclass[11pt,a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage{libertine}
\renewcommand\familydefault{\sfdefault} % not *
\usepackage[libertine,liby,libaltvw,vvarbb]{newtxmath}

\makeatletter
\DeclareSymbolFont{sfnumbers}{T1}{\biolinum@family}{m}{n}
\SetSymbolFont{sfnumbers}{bold}{T1}{\biolinum@family}{b}{n}
\makeatother
\DeclareMathSymbol{0}\mathalpha{sfnumbers}{"30}
\DeclareMathSymbol{1}\mathalpha{sfnumbers}{"31}
\DeclareMathSymbol{2}\mathalpha{sfnumbers}{"32}
\DeclareMathSymbol{3}\mathalpha{sfnumbers}{"33}
\DeclareMathSymbol{4}\mathalpha{sfnumbers}{"34}
\DeclareMathSymbol{5}\mathalpha{sfnumbers}{"35}
\DeclareMathSymbol{6}\mathalpha{sfnumbers}{"36}
\DeclareMathSymbol{7}\mathalpha{sfnumbers}{"37}
\DeclareMathSymbol{8}\mathalpha{sfnumbers}{"38}
\DeclareMathSymbol{9}\mathalpha{sfnumbers}{"39}

\begin{document}

\noindent 1234567890 TEXT\\
$1234567890$ MATH\\
is it possible to make numbers in math as in text.

\end{document}

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Changing Number Font Into Sans Serif

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