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Problem with a commutative diagram

Commutative diagram using TeX WriterError in Tikz-cd packageAdd to commutative diagramDefine a commutative diagram and reuse itHow to make a commutative diagram using tikz-cd?Commutative diagram for modified cubeArrow to side of commutative diagramCommutative diagrams and arrowsLength vertical arrow in commutative diagramCommutative diagram with non-uniform arrows

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty
margin-bottom:0;

7

2

I want to draw this diagram:

And I have tried out the following code which is not working:

[
 begintikzcd
 & E arrowru arrowdr$pi$ 
 & E^'arrowdl$pi^'$\
 & X 
 endtikzcd
]

Any help is appreciated.

Edit: There should be a u over the arrow from E to E' in the picture.

tikz-cd commutative-diagrams

share|improve this question

edited Oct 16 at 1:42

MrWhite

10544 bronze badges

asked Oct 14 at 17:01

LarssonLarsson

18455 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Note that E^' is wrong; it should be E'. Also the arguments to arrow are already in math mode, so $ should not be used in them.
  
  – egreg
  Oct 14 at 20:42
  

  
  
  
  

add a comment
 | 

7

2

I want to draw this diagram:

And I have tried out the following code which is not working:

[
 begintikzcd
 & E arrowru arrowdr$pi$ 
 & E^'arrowdl$pi^'$\
 & X 
 endtikzcd
]

Any help is appreciated.

Edit: There should be a u over the arrow from E to E' in the picture.

tikz-cd commutative-diagrams

share|improve this question

edited Oct 16 at 1:42

MrWhite

10544 bronze badges

asked Oct 14 at 17:01

LarssonLarsson

18455 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Note that E^' is wrong; it should be E'. Also the arguments to arrow are already in math mode, so $ should not be used in them.
  
  – egreg
  Oct 14 at 20:42
  

  
  
  
  

add a comment
 | 

I want to draw this diagram:

And I have tried out the following code which is not working:

[
 begintikzcd
 & E arrowru arrowdr$pi$ 
 & E^'arrowdl$pi^'$\
 & X 
 endtikzcd
]

Any help is appreciated.

Edit: There should be a u over the arrow from E to E' in the picture.

tikz-cd commutative-diagrams

share|improve this question

edited Oct 16 at 1:42

MrWhite

10544 bronze badges

asked Oct 14 at 17:01

LarssonLarsson

18455 bronze badges

[
 begintikzcd
 & E arrowru arrowdr$pi$ 
 & E^'arrowdl$pi^'$\
 & X 
 endtikzcd
]

share|improve this question

edited Oct 16 at 1:42

MrWhite

10544 bronze badges

asked Oct 14 at 17:01

LarssonLarsson

18455 bronze badges

share|improve this question

edited Oct 16 at 1:42

MrWhite

10544 bronze badges

asked Oct 14 at 17:01

LarssonLarsson

18455 bronze badges

edited Oct 16 at 1:42

MrWhite

10544 bronze badges

edited Oct 16 at 1:42

MrWhite

10544 bronze badges

asked Oct 14 at 17:01

LarssonLarsson

18455 bronze badges

asked Oct 14 at 17:01

LarssonLarsson

18455 bronze badges

4 Answers
4

active

oldest

votes

11

You need three columns. But also to vertically align pi and pi'.

With setheightxy we typeset x, but as if its vertical dimensions were those of y.

documentclassarticle
usepackageamsmath
usepackagetikz-cd

newcommandsetheight[2]smash#1vphantom#2

begindocument

begintikzcd[column sep=small]
E arrow[rd, "pi"'] arrow[rr, "u"] & & E' arrow[ld, "setheightpi'pi"] \
& X
endtikzcd

enddocument

share|improve this answer

answered Oct 14 at 20:38

egregegreg

779k9393 gold badges20272027 silver badges33943394 bronze badges

• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  A concise solution which just goes the extra mile to look a little bit cleaner; great answer!
  
  – Peiffap
  Oct 14 at 20:45
  
  

  
  
  
  

add a comment
 | 

8

documentclassarticle
usepackagetikz-cd
begindocument
[
 begintikzcd
 E arrow[rr,"u"] arrow[dr,"pi"'] 
 & & E'arrow[dl,"pi'"]\
 & X & \
 endtikzcd
]
enddocument

share|improve this answer

answered Oct 14 at 17:15

Schrödinger's catSchrödinger's cat

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add a comment
 | 

6

Here there is my proposal.

documentclass[a4paper,12pt]article
usepackagetikz-cd
begindocument
begintikzcd[row sep=2 em,column sep=1em]
E arrow[rd, "pi"'] arrow[rr, "u"] & & E' arrow[ld, "pi'"] \
& x &
endtikzcd
enddocument

ADDENDUM: a variant with xy package.

It is possible to have pi and pi' on the same horizontal line (nearly by eye - see the distances .46 and .4) using xy package with the same tips (see option cmtip) of tikz-cd package.

documentclass[a4paper,12pt]article
pagestyleempty
usepackage[all,cmtip]xy
begindocument
xymatrix
E ar[rr]^u
ar[dr]_(.46)pi 
&& E'ar[dl]^(.4)pi' \
& X 
enddocument

share|improve this answer

edited Oct 15 at 14:10

answered Oct 14 at 17:20

SebastianoSebastiano

17.2k55 gold badges2929 silver badges8484 bronze badges

add a comment
 | 

6

documentclassarticle
usepackagetikz-cd

begindocument
[
 begintikzcd[row sep=huge]
E ar[rr,"u"] ar[dr,"pi" '] 
 & & E'ar[dl, "pi'"] \ 
 & x & 
 endtikzcd
]
enddocument

or

documentclassarticle
usepackagetikz-cd

begindocument
[
 begintikzcd[row sep=huge]
E ar[rr,"u"] ar[dr, "pi", sloped]
 & & E'ar[dl, "pi'",sloped] \
 & x &
 endtikzcd
]
enddocument

share|improve this answer

edited Oct 15 at 20:59

answered Oct 14 at 17:14

ZarkoZarko

151k88 gold badges8787 silver badges199199 bronze badges

add a comment
 | 

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11

You need three columns. But also to vertically align pi and pi'.

With setheightxy we typeset x, but as if its vertical dimensions were those of y.

documentclassarticle
usepackageamsmath
usepackagetikz-cd

newcommandsetheight[2]smash#1vphantom#2

begindocument

begintikzcd[column sep=small]
E arrow[rd, "pi"'] arrow[rr, "u"] & & E' arrow[ld, "setheightpi'pi"] \
& X
endtikzcd

enddocument

share|improve this answer

answered Oct 14 at 20:38

egregegreg

779k9393 gold badges20272027 silver badges33943394 bronze badges

• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  A concise solution which just goes the extra mile to look a little bit cleaner; great answer!
  
  – Peiffap
  Oct 14 at 20:45
  
  

  
  
  
  

add a comment
 | 

11

You need three columns. But also to vertically align pi and pi'.

With setheightxy we typeset x, but as if its vertical dimensions were those of y.

documentclassarticle
usepackageamsmath
usepackagetikz-cd

newcommandsetheight[2]smash#1vphantom#2

begindocument

begintikzcd[column sep=small]
E arrow[rd, "pi"'] arrow[rr, "u"] & & E' arrow[ld, "setheightpi'pi"] \
& X
endtikzcd

enddocument

share|improve this answer

answered Oct 14 at 20:38

egregegreg

779k9393 gold badges20272027 silver badges33943394 bronze badges

• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  A concise solution which just goes the extra mile to look a little bit cleaner; great answer!
  
  – Peiffap
  Oct 14 at 20:45
  
  

  
  
  
  

add a comment
 | 

You need three columns. But also to vertically align pi and pi'.

With setheightxy we typeset x, but as if its vertical dimensions were those of y.

documentclassarticle
usepackageamsmath
usepackagetikz-cd

newcommandsetheight[2]smash#1vphantom#2

begindocument

begintikzcd[column sep=small]
E arrow[rd, "pi"'] arrow[rr, "u"] & & E' arrow[ld, "setheightpi'pi"] \
& X
endtikzcd

enddocument

share|improve this answer

answered Oct 14 at 20:38

egregegreg

779k9393 gold badges20272027 silver badges33943394 bronze badges

documentclassarticle
usepackageamsmath
usepackagetikz-cd

newcommandsetheight[2]smash#1vphantom#2

begindocument

begintikzcd[column sep=small]
E arrow[rd, "pi"'] arrow[rr, "u"] & & E' arrow[ld, "setheightpi'pi"] \
& X
endtikzcd

enddocument

share|improve this answer

answered Oct 14 at 20:38

egregegreg

779k9393 gold badges20272027 silver badges33943394 bronze badges

answered Oct 14 at 20:38

egregegreg

779k9393 gold badges20272027 silver badges33943394 bronze badges

answered Oct 14 at 20:38

egregegreg

779k9393 gold badges20272027 silver badges33943394 bronze badges

8

documentclassarticle
usepackagetikz-cd
begindocument
[
 begintikzcd
 E arrow[rr,"u"] arrow[dr,"pi"'] 
 & & E'arrow[dl,"pi'"]\
 & X & \
 endtikzcd
]
enddocument

share|improve this answer

answered Oct 14 at 17:15

Schrödinger's catSchrödinger's cat

19.1k11 gold badge2424 silver badges4444 bronze badges

add a comment
 | 

8

documentclassarticle
usepackagetikz-cd
begindocument
[
 begintikzcd
 E arrow[rr,"u"] arrow[dr,"pi"'] 
 & & E'arrow[dl,"pi'"]\
 & X & \
 endtikzcd
]
enddocument

share|improve this answer

answered Oct 14 at 17:15

Schrödinger's catSchrödinger's cat

19.1k11 gold badge2424 silver badges4444 bronze badges

add a comment
 | 

documentclassarticle
usepackagetikz-cd
begindocument
[
 begintikzcd
 E arrow[rr,"u"] arrow[dr,"pi"'] 
 & & E'arrow[dl,"pi'"]\
 & X & \
 endtikzcd
]
enddocument

share|improve this answer

answered Oct 14 at 17:15

Schrödinger's catSchrödinger's cat

19.1k11 gold badge2424 silver badges4444 bronze badges

documentclassarticle
usepackagetikz-cd
begindocument
[
 begintikzcd
 E arrow[rr,"u"] arrow[dr,"pi"'] 
 & & E'arrow[dl,"pi'"]\
 & X & \
 endtikzcd
]
enddocument

share|improve this answer

answered Oct 14 at 17:15

Schrödinger's catSchrödinger's cat

19.1k11 gold badge2424 silver badges4444 bronze badges

answered Oct 14 at 17:15

Schrödinger's catSchrödinger's cat

19.1k11 gold badge2424 silver badges4444 bronze badges

answered Oct 14 at 17:15

Schrödinger's catSchrödinger's cat

19.1k11 gold badge2424 silver badges4444 bronze badges

6

Here there is my proposal.

documentclass[a4paper,12pt]article
usepackagetikz-cd
begindocument
begintikzcd[row sep=2 em,column sep=1em]
E arrow[rd, "pi"'] arrow[rr, "u"] & & E' arrow[ld, "pi'"] \
& x &
endtikzcd
enddocument

ADDENDUM: a variant with xy package.

It is possible to have pi and pi' on the same horizontal line (nearly by eye - see the distances .46 and .4) using xy package with the same tips (see option cmtip) of tikz-cd package.

documentclass[a4paper,12pt]article
pagestyleempty
usepackage[all,cmtip]xy
begindocument
xymatrix
E ar[rr]^u
ar[dr]_(.46)pi 
&& E'ar[dl]^(.4)pi' \
& X 
enddocument

share|improve this answer

edited Oct 15 at 14:10

answered Oct 14 at 17:20

SebastianoSebastiano

17.2k55 gold badges2929 silver badges8484 bronze badges

add a comment
 | 

6

Here there is my proposal.

documentclass[a4paper,12pt]article
usepackagetikz-cd
begindocument
begintikzcd[row sep=2 em,column sep=1em]
E arrow[rd, "pi"'] arrow[rr, "u"] & & E' arrow[ld, "pi'"] \
& x &
endtikzcd
enddocument

ADDENDUM: a variant with xy package.

It is possible to have pi and pi' on the same horizontal line (nearly by eye - see the distances .46 and .4) using xy package with the same tips (see option cmtip) of tikz-cd package.

documentclass[a4paper,12pt]article
pagestyleempty
usepackage[all,cmtip]xy
begindocument
xymatrix
E ar[rr]^u
ar[dr]_(.46)pi 
&& E'ar[dl]^(.4)pi' \
& X 
enddocument

share|improve this answer

edited Oct 15 at 14:10

answered Oct 14 at 17:20

SebastianoSebastiano

17.2k55 gold badges2929 silver badges8484 bronze badges

add a comment
 | 

Here there is my proposal.

documentclass[a4paper,12pt]article
usepackagetikz-cd
begindocument
begintikzcd[row sep=2 em,column sep=1em]
E arrow[rd, "pi"'] arrow[rr, "u"] & & E' arrow[ld, "pi'"] \
& x &
endtikzcd
enddocument

ADDENDUM: a variant with xy package.

It is possible to have pi and pi' on the same horizontal line (nearly by eye - see the distances .46 and .4) using xy package with the same tips (see option cmtip) of tikz-cd package.

documentclass[a4paper,12pt]article
pagestyleempty
usepackage[all,cmtip]xy
begindocument
xymatrix
E ar[rr]^u
ar[dr]_(.46)pi 
&& E'ar[dl]^(.4)pi' \
& X 
enddocument

share|improve this answer

edited Oct 15 at 14:10

answered Oct 14 at 17:20

SebastianoSebastiano

17.2k55 gold badges2929 silver badges8484 bronze badges

documentclass[a4paper,12pt]article
usepackagetikz-cd
begindocument
begintikzcd[row sep=2 em,column sep=1em]
E arrow[rd, "pi"'] arrow[rr, "u"] & & E' arrow[ld, "pi'"] \
& x &
endtikzcd
enddocument

documentclass[a4paper,12pt]article
pagestyleempty
usepackage[all,cmtip]xy
begindocument
xymatrix
E ar[rr]^u
ar[dr]_(.46)pi 
&& E'ar[dl]^(.4)pi' \
& X 
enddocument

share|improve this answer

edited Oct 15 at 14:10

answered Oct 14 at 17:20

SebastianoSebastiano

17.2k55 gold badges2929 silver badges8484 bronze badges

answered Oct 14 at 17:20

SebastianoSebastiano

17.2k55 gold badges2929 silver badges8484 bronze badges

answered Oct 14 at 17:20

SebastianoSebastiano

17.2k55 gold badges2929 silver badges8484 bronze badges

6

documentclassarticle
usepackagetikz-cd

begindocument
[
 begintikzcd[row sep=huge]
E ar[rr,"u"] ar[dr,"pi" '] 
 & & E'ar[dl, "pi'"] \ 
 & x & 
 endtikzcd
]
enddocument

or

documentclassarticle
usepackagetikz-cd

begindocument
[
 begintikzcd[row sep=huge]
E ar[rr,"u"] ar[dr, "pi", sloped]
 & & E'ar[dl, "pi'",sloped] \
 & x &
 endtikzcd
]
enddocument

share|improve this answer

edited Oct 15 at 20:59

answered Oct 14 at 17:14

ZarkoZarko

151k88 gold badges8787 silver badges199199 bronze badges

add a comment
 | 

6

documentclassarticle
usepackagetikz-cd

begindocument
[
 begintikzcd[row sep=huge]
E ar[rr,"u"] ar[dr,"pi" '] 
 & & E'ar[dl, "pi'"] \ 
 & x & 
 endtikzcd
]
enddocument

or

documentclassarticle
usepackagetikz-cd

begindocument
[
 begintikzcd[row sep=huge]
E ar[rr,"u"] ar[dr, "pi", sloped]
 & & E'ar[dl, "pi'",sloped] \
 & x &
 endtikzcd
]
enddocument

share|improve this answer

edited Oct 15 at 20:59

answered Oct 14 at 17:14

ZarkoZarko

151k88 gold badges8787 silver badges199199 bronze badges

add a comment
 | 

documentclassarticle
usepackagetikz-cd

begindocument
[
 begintikzcd[row sep=huge]
E ar[rr,"u"] ar[dr,"pi" '] 
 & & E'ar[dl, "pi'"] \ 
 & x & 
 endtikzcd
]
enddocument

or

documentclassarticle
usepackagetikz-cd

begindocument
[
 begintikzcd[row sep=huge]
E ar[rr,"u"] ar[dr, "pi", sloped]
 & & E'ar[dl, "pi'",sloped] \
 & x &
 endtikzcd
]
enddocument

share|improve this answer

edited Oct 15 at 20:59

answered Oct 14 at 17:14

ZarkoZarko

151k88 gold badges8787 silver badges199199 bronze badges

documentclassarticle
usepackagetikz-cd

begindocument
[
 begintikzcd[row sep=huge]
E ar[rr,"u"] ar[dr,"pi" '] 
 & & E'ar[dl, "pi'"] \ 
 & x & 
 endtikzcd
]
enddocument

documentclassarticle
usepackagetikz-cd

begindocument
[
 begintikzcd[row sep=huge]
E ar[rr,"u"] ar[dr, "pi", sloped]
 & & E'ar[dl, "pi'",sloped] \
 & x &
 endtikzcd
]
enddocument

share|improve this answer

edited Oct 15 at 20:59

answered Oct 14 at 17:14

ZarkoZarko

151k88 gold badges8787 silver badges199199 bronze badges

answered Oct 14 at 17:14

ZarkoZarko

151k88 gold badges8787 silver badges199199 bronze badges

answered Oct 14 at 17:14

ZarkoZarko

151k88 gold badges8787 silver badges199199 bronze badges