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Options leqno, reqno for documentclass or exist another option?

aligning a multiline formula with the bullet of itemizeHow can I number a few equations togetherLeft aligning equations without align characterHow can I change the position of equation number locally if I am not using the amsmath package?List of equations, including equation contents and captionequation exceeds page width after changing document class from “article” to “beamer”Can't generate png with Error: Erroneous nesting of equation structuresHow continue a equation next lineAlign equations within one lineflalign, leqno and equations left aligned. Overlapping of equations and tags

1

I consider these simple MWE

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

     x^n + y^n = z^n

end{equation}

end{document}

With the option leqno we know that LaTeX puts the progressive number of the equation on the extreme left. With the option reqno at the extreme right of the page.

documentclass[12pt,reqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

     E=mc^2

end{equation}

end{document}

But when I have, for example a code with align option, knowing that the number can be either on the first or second equation, how come the leqno option is not active and the number is always put on the right?

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{align}

a &= b+c nonumber\

e &= f+g

end{align}

end{document}

1. How do I put the number of the equation between the two equations in the middle or at left or at right?


2. Are there only leqno and regno options with LaTeX? But is there, for example, the ceqno option, i.e. the possibility of placing the number next to the equation (at the centre to be clearer) or that it is always at the centre but in the middle of the two equations?

math-mode equations numbering align amsmath

share|improve this question

edited 37 mins ago

David Carlisle

502k4211491897

asked 1 hour ago

SebastianoSebastiano

11.8k42467

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  why do you say "how come the leqno option is not active and the number is always put on the right?" the equation number appears on the left when leqno is used.
  
  – David Carlisle
  59 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DavidCarlisle Why leqno is not active with align?
  
  – Sebastiano
  50 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  it is active, you get the number on the left
  
  – David Carlisle
  45 mins ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  The code is in the question not the answer so I added the image for leqno to your answer, you only showed the default right number. (there is no regno option)
  
  – David Carlisle
  34 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DavidCarlisle I have deleted my previous comment after your edit.
  
  – Sebastiano
  33 mins ago
  

  
  
  
  

add a comment | 

1

I consider these simple MWE

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

     x^n + y^n = z^n

end{equation}

end{document}

With the option leqno we know that LaTeX puts the progressive number of the equation on the extreme left. With the option reqno at the extreme right of the page.

documentclass[12pt,reqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

     E=mc^2

end{equation}

end{document}

But when I have, for example a code with align option, knowing that the number can be either on the first or second equation, how come the leqno option is not active and the number is always put on the right?

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{align}

a &= b+c nonumber\

e &= f+g

end{align}

end{document}

1. How do I put the number of the equation between the two equations in the middle or at left or at right?


2. Are there only leqno and regno options with LaTeX? But is there, for example, the ceqno option, i.e. the possibility of placing the number next to the equation (at the centre to be clearer) or that it is always at the centre but in the middle of the two equations?

math-mode equations numbering align amsmath

share|improve this question

edited 37 mins ago

David Carlisle

502k4211491897

asked 1 hour ago

SebastianoSebastiano

11.8k42467

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  why do you say "how come the leqno option is not active and the number is always put on the right?" the equation number appears on the left when leqno is used.
  
  – David Carlisle
  59 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DavidCarlisle Why leqno is not active with align?
  
  – Sebastiano
  50 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  it is active, you get the number on the left
  
  – David Carlisle
  45 mins ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  The code is in the question not the answer so I added the image for leqno to your answer, you only showed the default right number. (there is no regno option)
  
  – David Carlisle
  34 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DavidCarlisle I have deleted my previous comment after your edit.
  
  – Sebastiano
  33 mins ago
  

  
  
  
  

add a comment | 

I consider these simple MWE

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

     x^n + y^n = z^n

end{equation}

end{document}

With the option leqno we know that LaTeX puts the progressive number of the equation on the extreme left. With the option reqno at the extreme right of the page.

documentclass[12pt,reqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

     E=mc^2

end{equation}

end{document}

But when I have, for example a code with align option, knowing that the number can be either on the first or second equation, how come the leqno option is not active and the number is always put on the right?

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{align}

a &= b+c nonumber\

e &= f+g

end{align}

end{document}

1. How do I put the number of the equation between the two equations in the middle or at left or at right?


2. Are there only leqno and regno options with LaTeX? But is there, for example, the ceqno option, i.e. the possibility of placing the number next to the equation (at the centre to be clearer) or that it is always at the centre but in the middle of the two equations?

math-mode equations numbering align amsmath

share|improve this question

edited 37 mins ago

David Carlisle

502k4211491897

asked 1 hour ago

SebastianoSebastiano

11.8k42467

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

     x^n + y^n = z^n

end{equation}

end{document}

documentclass[12pt,reqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

     E=mc^2

end{equation}

end{document}

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{align}

a &= b+c nonumber\

e &= f+g

end{align}

end{document}

share|improve this question

edited 37 mins ago

David Carlisle

502k4211491897

asked 1 hour ago

SebastianoSebastiano

11.8k42467

share|improve this question

edited 37 mins ago

David Carlisle

502k4211491897

asked 1 hour ago

SebastianoSebastiano

11.8k42467

edited 37 mins ago

David Carlisle

502k4211491897

edited 37 mins ago

David Carlisle

502k4211491897

asked 1 hour ago

SebastianoSebastiano

11.8k42467

asked 1 hour ago

SebastianoSebastiano

11.8k42467

1 Answer
1

active

oldest

votes

3

If you want a single number for the display, use equation not align

Note that there is no reqno option, equation numbers on the right is the default.

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

begin{split}

a &= b+c \

e &= f+g

end{split}

end{equation}

end{document}

share|improve this answer

edited 33 mins ago

answered 1 hour ago

David CarlisleDavid Carlisle

502k4211491897

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  But can the number (1) be placed closer to the two equations always in the middle?
  
  – Sebastiano
  49 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Sebastiano equation numbers are always placed at the margin
  
  – David Carlisle
  45 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Sebastiano if you really wanted to change the margins you could use a minipage for example
  
  – David Carlisle
  43 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I asked myself this question when I remember seeing a book of Physics in English that had the number of formulas nearby.
  
  – Sebastiano
  38 mins ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  if you surround the display with say begin{minipage}{.5textwidth} then the number is only moved half way across the page (although using a minipage has other issues) @Sebastiano
  
  – David Carlisle
  53 secs ago
  

  
  
  
  

 | 
show 1 more comment

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3

If you want a single number for the display, use equation not align

Note that there is no reqno option, equation numbers on the right is the default.

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

begin{split}

a &= b+c \

e &= f+g

end{split}

end{equation}

end{document}

share|improve this answer

edited 33 mins ago

answered 1 hour ago

David CarlisleDavid Carlisle

502k4211491897

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  But can the number (1) be placed closer to the two equations always in the middle?
  
  – Sebastiano
  49 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Sebastiano equation numbers are always placed at the margin
  
  – David Carlisle
  45 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Sebastiano if you really wanted to change the margins you could use a minipage for example
  
  – David Carlisle
  43 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I asked myself this question when I remember seeing a book of Physics in English that had the number of formulas nearby.
  
  – Sebastiano
  38 mins ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  if you surround the display with say begin{minipage}{.5textwidth} then the number is only moved half way across the page (although using a minipage has other issues) @Sebastiano
  
  – David Carlisle
  53 secs ago
  

  
  
  
  

 | 
show 1 more comment

3

If you want a single number for the display, use equation not align

Note that there is no reqno option, equation numbers on the right is the default.

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

begin{split}

a &= b+c \

e &= f+g

end{split}

end{equation}

end{document}

share|improve this answer

edited 33 mins ago

answered 1 hour ago

David CarlisleDavid Carlisle

502k4211491897

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  But can the number (1) be placed closer to the two equations always in the middle?
  
  – Sebastiano
  49 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Sebastiano equation numbers are always placed at the margin
  
  – David Carlisle
  45 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Sebastiano if you really wanted to change the margins you could use a minipage for example
  
  – David Carlisle
  43 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I asked myself this question when I remember seeing a book of Physics in English that had the number of formulas nearby.
  
  – Sebastiano
  38 mins ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  if you surround the display with say begin{minipage}{.5textwidth} then the number is only moved half way across the page (although using a minipage has other issues) @Sebastiano
  
  – David Carlisle
  53 secs ago
  

  
  
  
  

 | 
show 1 more comment

If you want a single number for the display, use equation not align

Note that there is no reqno option, equation numbers on the right is the default.

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

begin{split}

a &= b+c \

e &= f+g

end{split}

end{equation}

end{document}

share|improve this answer

edited 33 mins ago

answered 1 hour ago

David CarlisleDavid Carlisle

502k4211491897

documentclass[12pt,leqno]{article}

usepackage{amsmath}

begin{document}

begin{equation}

begin{split}

a &= b+c \

e &= f+g

end{split}

end{equation}

end{document}

share|improve this answer

edited 33 mins ago

answered 1 hour ago

David CarlisleDavid Carlisle

502k4211491897

answered 1 hour ago

David CarlisleDavid Carlisle

502k4211491897

answered 1 hour ago

David CarlisleDavid Carlisle

502k4211491897