Remove the + for multiple authors in alpabetic cite style (biblatex)

Question

I am pretty new to LaTeX. I tried my best, but could not solve the problem myself.

By request of my thesis supervisor, I should use the alpabetic citestyle. If there is only one author, it works how I (and my supervisor) would like to have it, citations look like this:

[Aut20]

But if there are multiple authors, citations look like this:

[Aut+20]

Can anyone advise me how to get rid of the "+" for works with multiple authors?

Answer 1

The '+' is inserted as an "et al." marker. It is controlled by \labelalphaothers, so if you want the marker gone and don't want to change anything else about the labels, just define

\renewcommand*{\labelalphaothers}{}

MWE

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

\usepackage[style=alphabetic, backend=biber]{biblatex}

\renewcommand*{\labelalphaothers}{}

\addbibresource{biblatex-examples.bib}

\begin{document}
\cite{aksin,nussbaum,sigfridsson}
\printbibliography
\end{document}