or
Isi imported from SE
biblatex beamer
I use the customized footcite command from https://tex.stackexchange.com/questions/123104/inline-citations-with-only-author-title-and-year:

    \newcommand{\customcite}[1]{\citeauthor{#1}, \citetitle{#1}, \citeyear{#1}}

My problem is now, when I have the same reference on multiple slides, the footnote number is increased. I would like to have the same number for the same source on every slide where it appears.

I found something with `savefootnote`, but this seems to be very complicated: https://tex.stackexchange.com/questions/27763/beamer-multiple-references-to-the-same-footnote. Also, it is only possible to store one reference at a time, but I would like to have 3 references each on 2 pages.

MWE:

    \documentclass[11pt]{beamer}
    %\documentclass[handout,11pt]{beamer}
    \usepackage[utf8]{inputenc}
    \usepackage[T1]{fontenc}
    \usetheme{Madrid}
    
    
    % literature
    % only for this example, otherwise in .bib file
    \usepackage{filecontents}
    
    \begin{filecontents}{\jobname.bib}
    @article{Harshman1970,
    	author = {and others Harshman, Richard A},
    	doi = {10.1134/S0036023613040165},
    	file = {:C$\backslash$:/Users/Isi/Documents/Research/Tensors/TensorsDocumentation/Literature/Harshman{\_}CPD.pdf:pdf},
    	issn = {00360236},
    	journal = {UCLA Working Papers in Phonetics},
    	pages = {1--84},
    	title = {{Foundations of the PARAFAC procedure: Models and conditions for an" explanatory" multimodal factor analysis}},
    	volume = {16},
    	year = {1970}
    }
    @article{Hitchcock1927,
    	author = {Hitchcock, Frank L.},
    	doi = {10.1002/sapm192761164},
    	file = {:C$\backslash$:/Users/Isi/Documents/Research/Tensors/TensorsDocumentation/Literature/Hitchcock{\_}cpd.pdf:pdf},
    	issn = {0097-1421},
    	journal = {Journal of Mathematics and Physics},
    	number = {1-4},
    	pages = {164--189},
    	title = {{The Expression of a Tensor or a Polyadic as a Sum of Products}},
    	volume = {6},
    	year = {1927}
    }
    @article{Carroll1970,
    	doi = {10.1007/BF02310791},
    	file = {:C$\backslash$:/Users/Isi/Documents/Research/Tensors/TensorsDocumentation/Literature/Carrol{\_}Chang{\_}CPD.pdf:pdf},
    	issn = {00333123},
    	journal = {Psychometrika},
    	number = {3},
    	pages = {283--319},
    	title = {{Analysis of individual differences in multidimensional scaling via an n-way generalization of "Eckart-Young" decomposition}},
    	volume = {35},
    	year = {1970}
    }
    
    \end{filecontents}
    
    \usepackage[style=verbose,backend=bibtex]{biblatex}
    \addbibresource{\jobname.bib}
    \newcommand{\customfootcite}[1]{\footnote{\citeauthor{#1}, \citetitle{#1}, \citeyear{#1}}}
    
    
    
    \begin{document}
    	\setbeamertemplate{navigation symbols}{}
    	
    	\begin{frame}{Slide 1\customfootcite{Harshman1970}\customfootcite{Hitchcock1927}\customfootcite{Carroll1970}}
    		some text
    	\end{frame}
    
    	\begin{frame}{Slide 2\customfootcite{Harshman1970}\customfootcite{Hitchcock1927}\customfootcite{Carroll1970}}
    	some figure
    	\end{frame}
    
    \end{document}

Gives this:

[![enter image description here][1]][1]


I want both slides to have the same numbers.

Thank you in advance!

  [1]: https://i.stack.imgur.com/80baB.png
Top Answer
samcarter
Instead of trying to re-invent the wheel, you could let `biblatex` do the hard work for you. With an numeric style, each of your references will have it's unique number:

```
\documentclass[11pt]{beamer}
%\documentclass[handout,11pt]{beamer}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usetheme{Madrid}

\begin{filecontents}[overwrite]{\jobname.bib}
@article{Harshman1970,
    author = {Harshman, Richard A and others},
    doi = {10.1134/S0036023613040165},
    file = {:C$\backslash$:/Users/Isi/Documents/Research/Tensors/TensorsDocumentation/Literature/Harshman{\_}CPD.pdf:pdf},
    issn = {00360236},
    journal = {UCLA Working Papers in Phonetics},
    pages = {1--84},
    title = {{Foundations of the PARAFAC procedure: Models and conditions for an" explanatory" multimodal factor analysis}},
    volume = {16},
    year = {1970}
}
@article{Hitchcock1927,
    author = {Hitchcock, Frank L.},
    doi = {10.1002/sapm192761164},
    file = {:C$\backslash$:/Users/Isi/Documents/Research/Tensors/TensorsDocumentation/Literature/Hitchcock{\_}cpd.pdf:pdf},
    issn = {0097-1421},
    journal = {Journal of Mathematics and Physics},
    number = {1-4},
    pages = {164--189},
    title = {{The Expression of a Tensor or a Polyadic as a Sum of Products}},
    volume = {6},
    year = {1927}
}
@article{Carroll1970,
    doi = {10.1007/BF02310791},
    file = {:C$\backslash$:/Users/Isi/Documents/Research/Tensors/TensorsDocumentation/Literature/Carrol{\_}Chang{\_}CPD.pdf:pdf},
    issn = {00333123},
    journal = {Psychometrika},
    number = {3},
    pages = {283--319},
    title = {{Analysis of individual differences in multidimensional scaling via an n-way generalization of "Eckart-Young" decomposition}},
    volume = {35},
    year = {1970}
}



\end{filecontents}

\usepackage[style=numeric,sorting=none]{biblatex}

\addbibresource{\jobname.bib}

\setbeamertemplate{bibliography item}[text]

\makeatletter
\DeclareCiteCommand{\cite}[\mkbibsuperscript]
  {\usebibmacro{prenote}}
  {\usebibmacro{citeindex}%
   \usebibmacro{cite}}
  {\multicitedelim}
  {\usebibmacro{postnote}}

\renewbibmacro*{cite}{%
  \printtext[bibhyperref]{%
    \printfield{labelprefix}%
    \printfield{labelnumber}%
    \ifbool{bbx:subentry}{%
        \printfield{entrysetcount}
    }{}%
  }%
  \footnotetext[\thefield{labelnumber}]{%
    \usedriver{\DeclareNameAlias{sortname}{default}}{\thefield{entrytype}}
  }%
}

\DeclareBibliographyDriver{article}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \usebibmacro{author/translator+others}%
  \setunit{\printdelim{nametitledelim}}\newblock
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{date}%
  \usebibmacro{finentry}}
\makeatother

\begin{document}

    \begin{frame}{Slide 1\cite{Harshman1970}\cite{Hitchcock1927}\cite{Carroll1970}}
        some text
    \end{frame}

    \begin{frame}{Slide 2\cite{Hitchcock1927}\cite{Carroll1970}}
    some figure
    \end{frame}
    
    \begin{frame}
    \printbibliography
    \end{frame}

\end{document}
```
![Screen Shot 2019-12-16 at 23.35.47.png](/image?hash=d5d470fecabd57648344b69c909b458f7b70da15ac3b9c13c81b9297432976ee)


(I would prefer if this answer would **not** be reposted on tex.se)
Latex Beamer same reference on different slides with footcite

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