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subequations: How to continue numbering within subequation?

8

Let's assume we want to create one subequation including four aligned single equations. The first two single equations should be numbered as 1a and 1b while the third and fourth one should continue the numbering of the previous one, but with new equation number as 2a and 2b.

---

Minimum Working Example (MWE):

documentclassarticle
usepackageamsmath

begindocument
 beginsubequations
 beginalign
 1 &= 1\
 2 &= 2\
 3 &= 3\% from here a new equation number should begin
 4 &= 4
 endalign
 endsubequations
enddocument

---

Screenshot of the result:

---

Questions:

1. How can I automatically continue numbering of the previous equation numbers without cheating around by manually assigning numbers/tags?


2. Would it be possible to increase the vertical space between the equation 1-pair and the equation 2-pair?

equations numbering align amsmath subequations

share|improve this question

edited 14 hours ago

Dave

asked 15 hours ago

DaveDave

1,128619

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I have removed my answer :-).
  
  – Sebastiano
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Should (2)s and (1)s be aligned? I don't think they should.
  
  – JouleV
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Split into two subequations.
  
  – ferahfeza
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Sebastiano: I am very sorry for this! :-( But thank you very much for your efforts!
  
  – Dave
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  I think it's a duplicate. Does tex.stackexchange.com/a/445115/4427 help?
  
  – egreg
  14 hours ago
  
  

  
  
  
  

 | 
show 3 more comments

8

Let's assume we want to create one subequation including four aligned single equations. The first two single equations should be numbered as 1a and 1b while the third and fourth one should continue the numbering of the previous one, but with new equation number as 2a and 2b.

---

Minimum Working Example (MWE):

documentclassarticle
usepackageamsmath

begindocument
 beginsubequations
 beginalign
 1 &= 1\
 2 &= 2\
 3 &= 3\% from here a new equation number should begin
 4 &= 4
 endalign
 endsubequations
enddocument

---

Screenshot of the result:

---

Questions:

1. How can I automatically continue numbering of the previous equation numbers without cheating around by manually assigning numbers/tags?


2. Would it be possible to increase the vertical space between the equation 1-pair and the equation 2-pair?

equations numbering align amsmath subequations

share|improve this question

edited 14 hours ago

Dave

asked 15 hours ago

DaveDave

1,128619

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I have removed my answer :-).
  
  – Sebastiano
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Should (2)s and (1)s be aligned? I don't think they should.
  
  – JouleV
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Split into two subequations.
  
  – ferahfeza
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Sebastiano: I am very sorry for this! :-( But thank you very much for your efforts!
  
  – Dave
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  I think it's a duplicate. Does tex.stackexchange.com/a/445115/4427 help?
  
  – egreg
  14 hours ago
  
  

  
  
  
  

 | 
show 3 more comments

Let's assume we want to create one subequation including four aligned single equations. The first two single equations should be numbered as 1a and 1b while the third and fourth one should continue the numbering of the previous one, but with new equation number as 2a and 2b.

---

Minimum Working Example (MWE):

documentclassarticle
usepackageamsmath

begindocument
 beginsubequations
 beginalign
 1 &= 1\
 2 &= 2\
 3 &= 3\% from here a new equation number should begin
 4 &= 4
 endalign
 endsubequations
enddocument

---

Screenshot of the result:

---

Questions:

1. How can I automatically continue numbering of the previous equation numbers without cheating around by manually assigning numbers/tags?


2. Would it be possible to increase the vertical space between the equation 1-pair and the equation 2-pair?

equations numbering align amsmath subequations

share|improve this question

edited 14 hours ago

Dave

asked 15 hours ago

DaveDave

1,128619

documentclassarticle
usepackageamsmath

begindocument
 beginsubequations
 beginalign
 1 &= 1\
 2 &= 2\
 3 &= 3\% from here a new equation number should begin
 4 &= 4
 endalign
 endsubequations
enddocument

share|improve this question

edited 14 hours ago

Dave

asked 15 hours ago

DaveDave

1,128619

share|improve this question

edited 14 hours ago

Dave

asked 15 hours ago

DaveDave

1,128619

asked 15 hours ago

DaveDave

1,128619

asked 15 hours ago

DaveDave

1,128619

1 Answer
1

active

oldest

votes

11

I could not find the duplicate, so here is my attempt:

documentclassarticle
usepackageamsmath
newcommandStepSubequations
 stepcounterparentequation
 gdeftheparentequationarabicparentequation
 setcounterequation0

begindocument
 beginsubequations
 beginalign
 1 &= 1\
 2 &= 2\
 StepSubequations
 3 &= 3\% from here a new equation number should begin
 4 &= 4
 endalign
 endsubequations

 beginequation
 labeleq:1
 a=b
 endequation

enddocument

share|improve this answer

answered 14 hours ago

daleifdaleif

33.6k255118

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Thank you very much! :-)
  
  – Dave
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Approved your code. :-)
  
  – Sebastiano
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Note that in egregs duplicated answer, xdef is used, where I here use gdef, so look out for differences.
  
  – daleif
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @daleif: I think there is some little issue when using documentclassscrbook: In scrbook all equation numbers will follow the format chapternumber.equationnumber, but your example does not include the chapternumber before equationnumber. Is there an option to fix that?
  
  – Dave
  12 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Dave see if you can guess what to change in the definition of StepSubequations, it is not that hard. Hint, you may want to add thechapter somewhere.
  
  – daleif
  12 hours ago
  

  
  
  
  

 | 
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11

I could not find the duplicate, so here is my attempt:

documentclassarticle
usepackageamsmath
newcommandStepSubequations
 stepcounterparentequation
 gdeftheparentequationarabicparentequation
 setcounterequation0

begindocument
 beginsubequations
 beginalign
 1 &= 1\
 2 &= 2\
 StepSubequations
 3 &= 3\% from here a new equation number should begin
 4 &= 4
 endalign
 endsubequations

 beginequation
 labeleq:1
 a=b
 endequation

enddocument

share|improve this answer

answered 14 hours ago

daleifdaleif

33.6k255118

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Thank you very much! :-)
  
  – Dave
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Approved your code. :-)
  
  – Sebastiano
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Note that in egregs duplicated answer, xdef is used, where I here use gdef, so look out for differences.
  
  – daleif
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @daleif: I think there is some little issue when using documentclassscrbook: In scrbook all equation numbers will follow the format chapternumber.equationnumber, but your example does not include the chapternumber before equationnumber. Is there an option to fix that?
  
  – Dave
  12 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Dave see if you can guess what to change in the definition of StepSubequations, it is not that hard. Hint, you may want to add thechapter somewhere.
  
  – daleif
  12 hours ago
  

  
  
  
  

 | 
show 1 more comment

11

I could not find the duplicate, so here is my attempt:

documentclassarticle
usepackageamsmath
newcommandStepSubequations
 stepcounterparentequation
 gdeftheparentequationarabicparentequation
 setcounterequation0

begindocument
 beginsubequations
 beginalign
 1 &= 1\
 2 &= 2\
 StepSubequations
 3 &= 3\% from here a new equation number should begin
 4 &= 4
 endalign
 endsubequations

 beginequation
 labeleq:1
 a=b
 endequation

enddocument

share|improve this answer

answered 14 hours ago

daleifdaleif

33.6k255118

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Thank you very much! :-)
  
  – Dave
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Approved your code. :-)
  
  – Sebastiano
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Note that in egregs duplicated answer, xdef is used, where I here use gdef, so look out for differences.
  
  – daleif
  14 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @daleif: I think there is some little issue when using documentclassscrbook: In scrbook all equation numbers will follow the format chapternumber.equationnumber, but your example does not include the chapternumber before equationnumber. Is there an option to fix that?
  
  – Dave
  12 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Dave see if you can guess what to change in the definition of StepSubequations, it is not that hard. Hint, you may want to add thechapter somewhere.
  
  – daleif
  12 hours ago
  

  
  
  
  

 | 
show 1 more comment

I could not find the duplicate, so here is my attempt:

documentclassarticle
usepackageamsmath
newcommandStepSubequations
 stepcounterparentequation
 gdeftheparentequationarabicparentequation
 setcounterequation0

begindocument
 beginsubequations
 beginalign
 1 &= 1\
 2 &= 2\
 StepSubequations
 3 &= 3\% from here a new equation number should begin
 4 &= 4
 endalign
 endsubequations

 beginequation
 labeleq:1
 a=b
 endequation

enddocument

share|improve this answer

answered 14 hours ago

daleifdaleif

33.6k255118

documentclassarticle
usepackageamsmath
newcommandStepSubequations
 stepcounterparentequation
 gdeftheparentequationarabicparentequation
 setcounterequation0

begindocument
 beginsubequations
 beginalign
 1 &= 1\
 2 &= 2\
 StepSubequations
 3 &= 3\% from here a new equation number should begin
 4 &= 4
 endalign
 endsubequations

 beginequation
 labeleq:1
 a=b
 endequation

enddocument

share|improve this answer

answered 14 hours ago

daleifdaleif

33.6k255118

answered 14 hours ago

daleifdaleif

33.6k255118

answered 14 hours ago

daleifdaleif

33.6k255118