Math equation in latex (varnothing)












5














In a pseudocode, I would like to assign varnothing to a variable.

My code goes like this:



documentclass[runningheads]{llncs} 
usepackage{graphicx}
usepackage{algpseudocode}
usepackage{algorithm}
usepackage{amsmath}
begin{document}
begin{algorithm}
caption{Find...}
begin{algorithmic}[1] State $RS$ $leftarrow$ $varnothing$ end{algorithmic}
end{algorithm}
end{document}


Unfortunately this doesn't work. The error message I got is the following:




State $RS$ $leftarrow varnothing $ The control sequence at the end
of the top line of your error message was never def'ed. If you have
misspelled it (e.g., `hobx'), type `I' and the correct spelling
(e.g., `Ihbox'). Otherwise just continue, and I'll forget about
whatever was undefined. ! Undefined control sequence.
varnothing l.103 ...quad quad $R$ $leftarrow$ $varnothing $
Comment{$R$ is the set ... The control sequence at the end of the top
line of your error message was never def'ed. If you have misspelled
it (e.g., `hobx'), type `I' and the correct spelling (e.g.,
`Ihbox'). Otherwise just continue, and I'll forget about whatever was
undefined.



Do you have any ides on how this can be resolved?



FYI, I've already installed amsmath from texlive-latex-base in debian 9.



Thanks,

Pavlos










share|improve this question
























  • Could you add fully compilable MWE?
    – Raaja
    Nov 23 '18 at 9:57










  • welcome to tex.se! please extend your code fragment to complete small document (caled minimal working example: mwe) beginning with documentclass... and ending with end{document}
    – Zarko
    Nov 23 '18 at 9:58










  • documentclass[runningheads]{llncs} usepackage{graphicx} usepackage{algpseudocode} usepackage{algorithm} usepackage{amsmath} begin{document} begin{algorithm} caption{Find...} begin{algorithmic}[1] State $RS$ $leftarrow$ end{algorithmic} end{algorithm} end{document}
    – Pavlos Ponos
    Nov 23 '18 at 10:10










  • @PavlosPonos You can also remove the comment with your code as Raaja has edited your question.
    – Sebastiano
    Nov 23 '18 at 10:51
















5














In a pseudocode, I would like to assign varnothing to a variable.

My code goes like this:



documentclass[runningheads]{llncs} 
usepackage{graphicx}
usepackage{algpseudocode}
usepackage{algorithm}
usepackage{amsmath}
begin{document}
begin{algorithm}
caption{Find...}
begin{algorithmic}[1] State $RS$ $leftarrow$ $varnothing$ end{algorithmic}
end{algorithm}
end{document}


Unfortunately this doesn't work. The error message I got is the following:




State $RS$ $leftarrow varnothing $ The control sequence at the end
of the top line of your error message was never def'ed. If you have
misspelled it (e.g., `hobx'), type `I' and the correct spelling
(e.g., `Ihbox'). Otherwise just continue, and I'll forget about
whatever was undefined. ! Undefined control sequence.
varnothing l.103 ...quad quad $R$ $leftarrow$ $varnothing $
Comment{$R$ is the set ... The control sequence at the end of the top
line of your error message was never def'ed. If you have misspelled
it (e.g., `hobx'), type `I' and the correct spelling (e.g.,
`Ihbox'). Otherwise just continue, and I'll forget about whatever was
undefined.



Do you have any ides on how this can be resolved?



FYI, I've already installed amsmath from texlive-latex-base in debian 9.



Thanks,

Pavlos










share|improve this question
























  • Could you add fully compilable MWE?
    – Raaja
    Nov 23 '18 at 9:57










  • welcome to tex.se! please extend your code fragment to complete small document (caled minimal working example: mwe) beginning with documentclass... and ending with end{document}
    – Zarko
    Nov 23 '18 at 9:58










  • documentclass[runningheads]{llncs} usepackage{graphicx} usepackage{algpseudocode} usepackage{algorithm} usepackage{amsmath} begin{document} begin{algorithm} caption{Find...} begin{algorithmic}[1] State $RS$ $leftarrow$ end{algorithmic} end{algorithm} end{document}
    – Pavlos Ponos
    Nov 23 '18 at 10:10










  • @PavlosPonos You can also remove the comment with your code as Raaja has edited your question.
    – Sebastiano
    Nov 23 '18 at 10:51














5












5








5


0





In a pseudocode, I would like to assign varnothing to a variable.

My code goes like this:



documentclass[runningheads]{llncs} 
usepackage{graphicx}
usepackage{algpseudocode}
usepackage{algorithm}
usepackage{amsmath}
begin{document}
begin{algorithm}
caption{Find...}
begin{algorithmic}[1] State $RS$ $leftarrow$ $varnothing$ end{algorithmic}
end{algorithm}
end{document}


Unfortunately this doesn't work. The error message I got is the following:




State $RS$ $leftarrow varnothing $ The control sequence at the end
of the top line of your error message was never def'ed. If you have
misspelled it (e.g., `hobx'), type `I' and the correct spelling
(e.g., `Ihbox'). Otherwise just continue, and I'll forget about
whatever was undefined. ! Undefined control sequence.
varnothing l.103 ...quad quad $R$ $leftarrow$ $varnothing $
Comment{$R$ is the set ... The control sequence at the end of the top
line of your error message was never def'ed. If you have misspelled
it (e.g., `hobx'), type `I' and the correct spelling (e.g.,
`Ihbox'). Otherwise just continue, and I'll forget about whatever was
undefined.



Do you have any ides on how this can be resolved?



FYI, I've already installed amsmath from texlive-latex-base in debian 9.



Thanks,

Pavlos










share|improve this question















In a pseudocode, I would like to assign varnothing to a variable.

My code goes like this:



documentclass[runningheads]{llncs} 
usepackage{graphicx}
usepackage{algpseudocode}
usepackage{algorithm}
usepackage{amsmath}
begin{document}
begin{algorithm}
caption{Find...}
begin{algorithmic}[1] State $RS$ $leftarrow$ $varnothing$ end{algorithmic}
end{algorithm}
end{document}


Unfortunately this doesn't work. The error message I got is the following:




State $RS$ $leftarrow varnothing $ The control sequence at the end
of the top line of your error message was never def'ed. If you have
misspelled it (e.g., `hobx'), type `I' and the correct spelling
(e.g., `Ihbox'). Otherwise just continue, and I'll forget about
whatever was undefined. ! Undefined control sequence.
varnothing l.103 ...quad quad $R$ $leftarrow$ $varnothing $
Comment{$R$ is the set ... The control sequence at the end of the top
line of your error message was never def'ed. If you have misspelled
it (e.g., `hobx'), type `I' and the correct spelling (e.g.,
`Ihbox'). Otherwise just continue, and I'll forget about whatever was
undefined.



Do you have any ides on how this can be resolved?



FYI, I've already installed amsmath from texlive-latex-base in debian 9.



Thanks,

Pavlos







equations






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 23 '18 at 12:21









Circumscribe

4,6811432




4,6811432










asked Nov 23 '18 at 9:53









Pavlos Ponos

282




282












  • Could you add fully compilable MWE?
    – Raaja
    Nov 23 '18 at 9:57










  • welcome to tex.se! please extend your code fragment to complete small document (caled minimal working example: mwe) beginning with documentclass... and ending with end{document}
    – Zarko
    Nov 23 '18 at 9:58










  • documentclass[runningheads]{llncs} usepackage{graphicx} usepackage{algpseudocode} usepackage{algorithm} usepackage{amsmath} begin{document} begin{algorithm} caption{Find...} begin{algorithmic}[1] State $RS$ $leftarrow$ end{algorithmic} end{algorithm} end{document}
    – Pavlos Ponos
    Nov 23 '18 at 10:10










  • @PavlosPonos You can also remove the comment with your code as Raaja has edited your question.
    – Sebastiano
    Nov 23 '18 at 10:51


















  • Could you add fully compilable MWE?
    – Raaja
    Nov 23 '18 at 9:57










  • welcome to tex.se! please extend your code fragment to complete small document (caled minimal working example: mwe) beginning with documentclass... and ending with end{document}
    – Zarko
    Nov 23 '18 at 9:58










  • documentclass[runningheads]{llncs} usepackage{graphicx} usepackage{algpseudocode} usepackage{algorithm} usepackage{amsmath} begin{document} begin{algorithm} caption{Find...} begin{algorithmic}[1] State $RS$ $leftarrow$ end{algorithmic} end{algorithm} end{document}
    – Pavlos Ponos
    Nov 23 '18 at 10:10










  • @PavlosPonos You can also remove the comment with your code as Raaja has edited your question.
    – Sebastiano
    Nov 23 '18 at 10:51
















Could you add fully compilable MWE?
– Raaja
Nov 23 '18 at 9:57




Could you add fully compilable MWE?
– Raaja
Nov 23 '18 at 9:57












welcome to tex.se! please extend your code fragment to complete small document (caled minimal working example: mwe) beginning with documentclass... and ending with end{document}
– Zarko
Nov 23 '18 at 9:58




welcome to tex.se! please extend your code fragment to complete small document (caled minimal working example: mwe) beginning with documentclass... and ending with end{document}
– Zarko
Nov 23 '18 at 9:58












documentclass[runningheads]{llncs} usepackage{graphicx} usepackage{algpseudocode} usepackage{algorithm} usepackage{amsmath} begin{document} begin{algorithm} caption{Find...} begin{algorithmic}[1] State $RS$ $leftarrow$ end{algorithmic} end{algorithm} end{document}
– Pavlos Ponos
Nov 23 '18 at 10:10




documentclass[runningheads]{llncs} usepackage{graphicx} usepackage{algpseudocode} usepackage{algorithm} usepackage{amsmath} begin{document} begin{algorithm} caption{Find...} begin{algorithmic}[1] State $RS$ $leftarrow$ end{algorithmic} end{algorithm} end{document}
– Pavlos Ponos
Nov 23 '18 at 10:10












@PavlosPonos You can also remove the comment with your code as Raaja has edited your question.
– Sebastiano
Nov 23 '18 at 10:51




@PavlosPonos You can also remove the comment with your code as Raaja has edited your question.
– Sebastiano
Nov 23 '18 at 10:51










1 Answer
1






active

oldest

votes


















5














varnothing belongs to the set of symbols in the package amssymb. So include it in your preamble as usepackage{amssymb} and you are good to go.



documentclass{article} 
usepackage{graphicx}
usepackage{algpseudocode}
usepackage{algorithm}
usepackage{amsmath}
usepackage{amssymb}
begin{document}
begin{algorithm}
caption{Find...}
begin{algorithmic}[1] State $RS$ $leftarrow$ $varnothing$ end{algorithmic}
end{algorithm}
end{document}


with which you will get:



enter image description here






share|improve this answer



















  • 3




    usepackage{amssymb} was the solution to my "problem". When adding this, without changing anything else, it solved my problem! Thanks!
    – Pavlos Ponos
    Nov 23 '18 at 10:23






  • 1




    @Pavlos Ponos you are welcome.
    – Raaja
    Nov 23 '18 at 10:25











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1 Answer
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active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

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active

oldest

votes









5














varnothing belongs to the set of symbols in the package amssymb. So include it in your preamble as usepackage{amssymb} and you are good to go.



documentclass{article} 
usepackage{graphicx}
usepackage{algpseudocode}
usepackage{algorithm}
usepackage{amsmath}
usepackage{amssymb}
begin{document}
begin{algorithm}
caption{Find...}
begin{algorithmic}[1] State $RS$ $leftarrow$ $varnothing$ end{algorithmic}
end{algorithm}
end{document}


with which you will get:



enter image description here






share|improve this answer



















  • 3




    usepackage{amssymb} was the solution to my "problem". When adding this, without changing anything else, it solved my problem! Thanks!
    – Pavlos Ponos
    Nov 23 '18 at 10:23






  • 1




    @Pavlos Ponos you are welcome.
    – Raaja
    Nov 23 '18 at 10:25
















5














varnothing belongs to the set of symbols in the package amssymb. So include it in your preamble as usepackage{amssymb} and you are good to go.



documentclass{article} 
usepackage{graphicx}
usepackage{algpseudocode}
usepackage{algorithm}
usepackage{amsmath}
usepackage{amssymb}
begin{document}
begin{algorithm}
caption{Find...}
begin{algorithmic}[1] State $RS$ $leftarrow$ $varnothing$ end{algorithmic}
end{algorithm}
end{document}


with which you will get:



enter image description here






share|improve this answer



















  • 3




    usepackage{amssymb} was the solution to my "problem". When adding this, without changing anything else, it solved my problem! Thanks!
    – Pavlos Ponos
    Nov 23 '18 at 10:23






  • 1




    @Pavlos Ponos you are welcome.
    – Raaja
    Nov 23 '18 at 10:25














5












5








5






varnothing belongs to the set of symbols in the package amssymb. So include it in your preamble as usepackage{amssymb} and you are good to go.



documentclass{article} 
usepackage{graphicx}
usepackage{algpseudocode}
usepackage{algorithm}
usepackage{amsmath}
usepackage{amssymb}
begin{document}
begin{algorithm}
caption{Find...}
begin{algorithmic}[1] State $RS$ $leftarrow$ $varnothing$ end{algorithmic}
end{algorithm}
end{document}


with which you will get:



enter image description here






share|improve this answer














varnothing belongs to the set of symbols in the package amssymb. So include it in your preamble as usepackage{amssymb} and you are good to go.



documentclass{article} 
usepackage{graphicx}
usepackage{algpseudocode}
usepackage{algorithm}
usepackage{amsmath}
usepackage{amssymb}
begin{document}
begin{algorithm}
caption{Find...}
begin{algorithmic}[1] State $RS$ $leftarrow$ $varnothing$ end{algorithmic}
end{algorithm}
end{document}


with which you will get:



enter image description here







share|improve this answer














share|improve this answer



share|improve this answer








edited Nov 23 '18 at 10:51

























answered Nov 23 '18 at 10:20









Raaja

2,1722630




2,1722630








  • 3




    usepackage{amssymb} was the solution to my "problem". When adding this, without changing anything else, it solved my problem! Thanks!
    – Pavlos Ponos
    Nov 23 '18 at 10:23






  • 1




    @Pavlos Ponos you are welcome.
    – Raaja
    Nov 23 '18 at 10:25














  • 3




    usepackage{amssymb} was the solution to my "problem". When adding this, without changing anything else, it solved my problem! Thanks!
    – Pavlos Ponos
    Nov 23 '18 at 10:23






  • 1




    @Pavlos Ponos you are welcome.
    – Raaja
    Nov 23 '18 at 10:25








3




3




usepackage{amssymb} was the solution to my "problem". When adding this, without changing anything else, it solved my problem! Thanks!
– Pavlos Ponos
Nov 23 '18 at 10:23




usepackage{amssymb} was the solution to my "problem". When adding this, without changing anything else, it solved my problem! Thanks!
– Pavlos Ponos
Nov 23 '18 at 10:23




1




1




@Pavlos Ponos you are welcome.
– Raaja
Nov 23 '18 at 10:25




@Pavlos Ponos you are welcome.
– Raaja
Nov 23 '18 at 10:25


















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