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enter image description here How can I solve this? what's the problem causing it? here's a sample of the .bib file enter image description here Thanks!

here's my packages and document set up, any help would be appreciated

\usepackage{amsfonts, amsmath, amssymb, amsthm}
\newgeometry{left=2cm, right=2cm, top=2cm, bottom=2cm}
\usepackage{mathtools, nccmath}

\newenvironment{Proof}{\begin{sloppypar}\noindent{\sf Proof.}}{\end{sloppypar}}





marked as duplicate by user36296, Troy, egreg bibtex May 13 '18 at 21:30

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  • 8
    This is because of the bibliography style you are using. This style says that if there are two references by the same author, only the first should have the name, the others are replaced by a dash. Usually it is possible to workaround this, but it's impossible to say with further information. Please post a minimal working example with bibliography (MWEB) so that we can get rid of that dash for you. – Phelype Oleinik May 13 '18 at 18:46
  • 3
    The symbol is not a hyphen, it's a "3-emdash" symbol. As Phelype has pointed out in an earlier comment, its appearance is a feature of the bibliography style that's you selected. – Mico May 13 '18 at 19:09
  • 3
    Aside: Rather than be bothered by the 3-emdash symbol, I'd be horrified by the lower-casing of the names einstein, yang, and mills. Please, please write the field as author = {On the integrability of the {Einstein}-{Yang}-{Mills} equations},; this will prevent BibTeX from applying sentence style (which induces lowercasing) to the three names in question. – Mico May 13 '18 at 19:13
  • Thank you guys I edited my question I hope that's the correct way to provide the MWE. (a complete noob here). – Neek May 13 '18 at 20:39
  • 2
    @Neek see tex.stackexchange.com/q/29381/36296 – user36296 May 13 '18 at 20:43

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