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How to save space when writing equations with cases?
Unicorn Meta Zoo #1: Why another podcast?
Announcing the arrival of Valued Associate #679: Cesar Manaratables with column width that depends on the width of table entriesTwo columns of equations, aligned and just one number per columnHow to adjust the blank space between the top of the left curly brace and the contents?How to align text to the right in math mode?flalign numberingTables: Missing $ insertedHow to properly format a proof/explanation with multiple points of alignment?Unwanted space with label in subfigure (subcaption) environmentHow can I left-align each cell in an equation containing math symbols?How do I get something into a rectangle without space for non-existent descenders?
I am writing in IEEE double column environment. I have some equations with cases. For example, this equation seems to have too much space after the brace and also before and after the commas.
I was using the array
environment which seems to cause those large spacing. I still prefer to have some independent control over the alignment of the three parts of the equation, since in some cases for each column, the length may be quite different, and I may choose to center, left, or right align for each column. What would be a good way to make those spacings smaller but still have control over the alignment?
The code I used for the equation is
beginequation
theta_pk=left{ beginarrayccc
omega t+alpha+beta & , & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , & n=7,8,9,10,11,12,ldots
endarrayright.
endequation
math-mode spacing
add a comment |
I am writing in IEEE double column environment. I have some equations with cases. For example, this equation seems to have too much space after the brace and also before and after the commas.
I was using the array
environment which seems to cause those large spacing. I still prefer to have some independent control over the alignment of the three parts of the equation, since in some cases for each column, the length may be quite different, and I may choose to center, left, or right align for each column. What would be a good way to make those spacings smaller but still have control over the alignment?
The code I used for the equation is
beginequation
theta_pk=left{ beginarrayccc
omega t+alpha+beta & , & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , & n=7,8,9,10,11,12,ldots
endarrayright.
endequation
math-mode spacing
5
There exists an environment for that:cases
.
– marmot
Apr 19 at 20:35
add a comment |
I am writing in IEEE double column environment. I have some equations with cases. For example, this equation seems to have too much space after the brace and also before and after the commas.
I was using the array
environment which seems to cause those large spacing. I still prefer to have some independent control over the alignment of the three parts of the equation, since in some cases for each column, the length may be quite different, and I may choose to center, left, or right align for each column. What would be a good way to make those spacings smaller but still have control over the alignment?
The code I used for the equation is
beginequation
theta_pk=left{ beginarrayccc
omega t+alpha+beta & , & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , & n=7,8,9,10,11,12,ldots
endarrayright.
endequation
math-mode spacing
I am writing in IEEE double column environment. I have some equations with cases. For example, this equation seems to have too much space after the brace and also before and after the commas.
I was using the array
environment which seems to cause those large spacing. I still prefer to have some independent control over the alignment of the three parts of the equation, since in some cases for each column, the length may be quite different, and I may choose to center, left, or right align for each column. What would be a good way to make those spacings smaller but still have control over the alignment?
The code I used for the equation is
beginequation
theta_pk=left{ beginarrayccc
omega t+alpha+beta & , & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , & n=7,8,9,10,11,12,ldots
endarrayright.
endequation
math-mode spacing
math-mode spacing
asked Apr 19 at 20:33
nanjunnanjun
15517
15517
5
There exists an environment for that:cases
.
– marmot
Apr 19 at 20:35
add a comment |
5
There exists an environment for that:cases
.
– marmot
Apr 19 at 20:35
5
5
There exists an environment for that:
cases
.– marmot
Apr 19 at 20:35
There exists an environment for that:
cases
.– marmot
Apr 19 at 20:35
add a comment |
2 Answers
2
active
oldest
votes
as mentioned @marmot in comment, cases
from amsmath
is right tool for your job. it care for right spacing between building block of your equation:
documentclassIEEEtran
usepackageamsmath
usepackagelipsum % for dummy text
begindocument
lipsum[1]
beginequation
theta_pk =
begincases
omega t+alpha+beta & , n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , n=7,8,9,10,11,12,ldots
endcases
endequation
lipsum[2-4]
enddocument
addendum:
as mentioned @manooooh in his valued comment, AMS (American Mathematical Society) prefer style, where comas follows math expression, i.e:
begincases
omega t+alpha+beta, & n=1,2,3,4,5,6,cdots,\
-omega t-alpha-beta, & n=7,8,9,10,11,12,cdots.
endcases
which use gives
but some people prefer the following style:
begincases
phantom-
omega t+alpha+beta, & n=1,2,3,4,5,6,cdots\
-omega t-alpha-beta, & n=7,8,9,10,11,12,cdots
endcases
giving:
however, documentation "amsldoc", as mentioned barbara beeton in her comment, is given the following example, how mathematicians usually use the cases
math environment:
begincases
omega t+alpha+beta & n=1,2,3,4,5,6,cdots,\
-omega t-alpha-beta & n=7,8,9,10,11,12,cdots.
endcases
which gives:
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
Apr 19 at 20:51
1
Great answer!! According to AMS, I think that the commas have to start just after the expression e.g.omega t+alpha+beta,
and notomega t+alpha+beta&,
, and at the end of the line should be a comma e.g.ldots,
.
– manooooh
Apr 19 at 20:53
1
@manooooh -- "According to AMS ... have to" is a bit of a stretch. The traditional location of the commas is indeed at the end of the initial segment of a line, not after the&
. That is what is shown in the user guide (texdoc amsldoc
).
– barbara beeton
Apr 20 at 2:55
add a comment |
A variant, with the fleqn
environment from nccmath
. I improvedged the alignment in the first column of the cases
environment, using a phantom — sign in the first row.
You also can save some space – to a certain extent, with the mathrlap
command from mathtools
(which loads amsmath
). I didn't need it here.
documentclassIEEEtran
usepackageamsmath, nccmath
usepackagelipsum % for dummy text
begindocument
lipsum[1]
beginfleqn
beginequation
theta_pk =
begincases
phantom-omega t+alpha+beta, & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta, & n=7,8,9,10,11,12,ldots
endcases
endequation
endfleqn
lipsum[2-4]
enddocument
What's the purpose offleqn
? I see no reason for it.
– egreg
Apr 19 at 21:32
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
Apr 19 at 21:43
add a comment |
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2 Answers
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2 Answers
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oldest
votes
as mentioned @marmot in comment, cases
from amsmath
is right tool for your job. it care for right spacing between building block of your equation:
documentclassIEEEtran
usepackageamsmath
usepackagelipsum % for dummy text
begindocument
lipsum[1]
beginequation
theta_pk =
begincases
omega t+alpha+beta & , n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , n=7,8,9,10,11,12,ldots
endcases
endequation
lipsum[2-4]
enddocument
addendum:
as mentioned @manooooh in his valued comment, AMS (American Mathematical Society) prefer style, where comas follows math expression, i.e:
begincases
omega t+alpha+beta, & n=1,2,3,4,5,6,cdots,\
-omega t-alpha-beta, & n=7,8,9,10,11,12,cdots.
endcases
which use gives
but some people prefer the following style:
begincases
phantom-
omega t+alpha+beta, & n=1,2,3,4,5,6,cdots\
-omega t-alpha-beta, & n=7,8,9,10,11,12,cdots
endcases
giving:
however, documentation "amsldoc", as mentioned barbara beeton in her comment, is given the following example, how mathematicians usually use the cases
math environment:
begincases
omega t+alpha+beta & n=1,2,3,4,5,6,cdots,\
-omega t-alpha-beta & n=7,8,9,10,11,12,cdots.
endcases
which gives:
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
Apr 19 at 20:51
1
Great answer!! According to AMS, I think that the commas have to start just after the expression e.g.omega t+alpha+beta,
and notomega t+alpha+beta&,
, and at the end of the line should be a comma e.g.ldots,
.
– manooooh
Apr 19 at 20:53
1
@manooooh -- "According to AMS ... have to" is a bit of a stretch. The traditional location of the commas is indeed at the end of the initial segment of a line, not after the&
. That is what is shown in the user guide (texdoc amsldoc
).
– barbara beeton
Apr 20 at 2:55
add a comment |
as mentioned @marmot in comment, cases
from amsmath
is right tool for your job. it care for right spacing between building block of your equation:
documentclassIEEEtran
usepackageamsmath
usepackagelipsum % for dummy text
begindocument
lipsum[1]
beginequation
theta_pk =
begincases
omega t+alpha+beta & , n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , n=7,8,9,10,11,12,ldots
endcases
endequation
lipsum[2-4]
enddocument
addendum:
as mentioned @manooooh in his valued comment, AMS (American Mathematical Society) prefer style, where comas follows math expression, i.e:
begincases
omega t+alpha+beta, & n=1,2,3,4,5,6,cdots,\
-omega t-alpha-beta, & n=7,8,9,10,11,12,cdots.
endcases
which use gives
but some people prefer the following style:
begincases
phantom-
omega t+alpha+beta, & n=1,2,3,4,5,6,cdots\
-omega t-alpha-beta, & n=7,8,9,10,11,12,cdots
endcases
giving:
however, documentation "amsldoc", as mentioned barbara beeton in her comment, is given the following example, how mathematicians usually use the cases
math environment:
begincases
omega t+alpha+beta & n=1,2,3,4,5,6,cdots,\
-omega t-alpha-beta & n=7,8,9,10,11,12,cdots.
endcases
which gives:
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
Apr 19 at 20:51
1
Great answer!! According to AMS, I think that the commas have to start just after the expression e.g.omega t+alpha+beta,
and notomega t+alpha+beta&,
, and at the end of the line should be a comma e.g.ldots,
.
– manooooh
Apr 19 at 20:53
1
@manooooh -- "According to AMS ... have to" is a bit of a stretch. The traditional location of the commas is indeed at the end of the initial segment of a line, not after the&
. That is what is shown in the user guide (texdoc amsldoc
).
– barbara beeton
Apr 20 at 2:55
add a comment |
as mentioned @marmot in comment, cases
from amsmath
is right tool for your job. it care for right spacing between building block of your equation:
documentclassIEEEtran
usepackageamsmath
usepackagelipsum % for dummy text
begindocument
lipsum[1]
beginequation
theta_pk =
begincases
omega t+alpha+beta & , n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , n=7,8,9,10,11,12,ldots
endcases
endequation
lipsum[2-4]
enddocument
addendum:
as mentioned @manooooh in his valued comment, AMS (American Mathematical Society) prefer style, where comas follows math expression, i.e:
begincases
omega t+alpha+beta, & n=1,2,3,4,5,6,cdots,\
-omega t-alpha-beta, & n=7,8,9,10,11,12,cdots.
endcases
which use gives
but some people prefer the following style:
begincases
phantom-
omega t+alpha+beta, & n=1,2,3,4,5,6,cdots\
-omega t-alpha-beta, & n=7,8,9,10,11,12,cdots
endcases
giving:
however, documentation "amsldoc", as mentioned barbara beeton in her comment, is given the following example, how mathematicians usually use the cases
math environment:
begincases
omega t+alpha+beta & n=1,2,3,4,5,6,cdots,\
-omega t-alpha-beta & n=7,8,9,10,11,12,cdots.
endcases
which gives:
as mentioned @marmot in comment, cases
from amsmath
is right tool for your job. it care for right spacing between building block of your equation:
documentclassIEEEtran
usepackageamsmath
usepackagelipsum % for dummy text
begindocument
lipsum[1]
beginequation
theta_pk =
begincases
omega t+alpha+beta & , n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , n=7,8,9,10,11,12,ldots
endcases
endequation
lipsum[2-4]
enddocument
addendum:
as mentioned @manooooh in his valued comment, AMS (American Mathematical Society) prefer style, where comas follows math expression, i.e:
begincases
omega t+alpha+beta, & n=1,2,3,4,5,6,cdots,\
-omega t-alpha-beta, & n=7,8,9,10,11,12,cdots.
endcases
which use gives
but some people prefer the following style:
begincases
phantom-
omega t+alpha+beta, & n=1,2,3,4,5,6,cdots\
-omega t-alpha-beta, & n=7,8,9,10,11,12,cdots
endcases
giving:
however, documentation "amsldoc", as mentioned barbara beeton in her comment, is given the following example, how mathematicians usually use the cases
math environment:
begincases
omega t+alpha+beta & n=1,2,3,4,5,6,cdots,\
-omega t-alpha-beta & n=7,8,9,10,11,12,cdots.
endcases
which gives:
edited Apr 20 at 4:57
answered Apr 19 at 20:48
ZarkoZarko
131k869170
131k869170
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
Apr 19 at 20:51
1
Great answer!! According to AMS, I think that the commas have to start just after the expression e.g.omega t+alpha+beta,
and notomega t+alpha+beta&,
, and at the end of the line should be a comma e.g.ldots,
.
– manooooh
Apr 19 at 20:53
1
@manooooh -- "According to AMS ... have to" is a bit of a stretch. The traditional location of the commas is indeed at the end of the initial segment of a line, not after the&
. That is what is shown in the user guide (texdoc amsldoc
).
– barbara beeton
Apr 20 at 2:55
add a comment |
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
Apr 19 at 20:51
1
Great answer!! According to AMS, I think that the commas have to start just after the expression e.g.omega t+alpha+beta,
and notomega t+alpha+beta&,
, and at the end of the line should be a comma e.g.ldots,
.
– manooooh
Apr 19 at 20:53
1
@manooooh -- "According to AMS ... have to" is a bit of a stretch. The traditional location of the commas is indeed at the end of the initial segment of a line, not after the&
. That is what is shown in the user guide (texdoc amsldoc
).
– barbara beeton
Apr 20 at 2:55
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
Apr 19 at 20:51
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
Apr 19 at 20:51
1
1
Great answer!! According to AMS, I think that the commas have to start just after the expression e.g.
omega t+alpha+beta,
and not omega t+alpha+beta&,
, and at the end of the line should be a comma e.g. ldots,
.– manooooh
Apr 19 at 20:53
Great answer!! According to AMS, I think that the commas have to start just after the expression e.g.
omega t+alpha+beta,
and not omega t+alpha+beta&,
, and at the end of the line should be a comma e.g. ldots,
.– manooooh
Apr 19 at 20:53
1
1
@manooooh -- "According to AMS ... have to" is a bit of a stretch. The traditional location of the commas is indeed at the end of the initial segment of a line, not after the
&
. That is what is shown in the user guide (texdoc amsldoc
).– barbara beeton
Apr 20 at 2:55
@manooooh -- "According to AMS ... have to" is a bit of a stretch. The traditional location of the commas is indeed at the end of the initial segment of a line, not after the
&
. That is what is shown in the user guide (texdoc amsldoc
).– barbara beeton
Apr 20 at 2:55
add a comment |
A variant, with the fleqn
environment from nccmath
. I improvedged the alignment in the first column of the cases
environment, using a phantom — sign in the first row.
You also can save some space – to a certain extent, with the mathrlap
command from mathtools
(which loads amsmath
). I didn't need it here.
documentclassIEEEtran
usepackageamsmath, nccmath
usepackagelipsum % for dummy text
begindocument
lipsum[1]
beginfleqn
beginequation
theta_pk =
begincases
phantom-omega t+alpha+beta, & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta, & n=7,8,9,10,11,12,ldots
endcases
endequation
endfleqn
lipsum[2-4]
enddocument
What's the purpose offleqn
? I see no reason for it.
– egreg
Apr 19 at 21:32
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
Apr 19 at 21:43
add a comment |
A variant, with the fleqn
environment from nccmath
. I improvedged the alignment in the first column of the cases
environment, using a phantom — sign in the first row.
You also can save some space – to a certain extent, with the mathrlap
command from mathtools
(which loads amsmath
). I didn't need it here.
documentclassIEEEtran
usepackageamsmath, nccmath
usepackagelipsum % for dummy text
begindocument
lipsum[1]
beginfleqn
beginequation
theta_pk =
begincases
phantom-omega t+alpha+beta, & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta, & n=7,8,9,10,11,12,ldots
endcases
endequation
endfleqn
lipsum[2-4]
enddocument
What's the purpose offleqn
? I see no reason for it.
– egreg
Apr 19 at 21:32
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
Apr 19 at 21:43
add a comment |
A variant, with the fleqn
environment from nccmath
. I improvedged the alignment in the first column of the cases
environment, using a phantom — sign in the first row.
You also can save some space – to a certain extent, with the mathrlap
command from mathtools
(which loads amsmath
). I didn't need it here.
documentclassIEEEtran
usepackageamsmath, nccmath
usepackagelipsum % for dummy text
begindocument
lipsum[1]
beginfleqn
beginequation
theta_pk =
begincases
phantom-omega t+alpha+beta, & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta, & n=7,8,9,10,11,12,ldots
endcases
endequation
endfleqn
lipsum[2-4]
enddocument
A variant, with the fleqn
environment from nccmath
. I improvedged the alignment in the first column of the cases
environment, using a phantom — sign in the first row.
You also can save some space – to a certain extent, with the mathrlap
command from mathtools
(which loads amsmath
). I didn't need it here.
documentclassIEEEtran
usepackageamsmath, nccmath
usepackagelipsum % for dummy text
begindocument
lipsum[1]
beginfleqn
beginequation
theta_pk =
begincases
phantom-omega t+alpha+beta, & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta, & n=7,8,9,10,11,12,ldots
endcases
endequation
endfleqn
lipsum[2-4]
enddocument
answered Apr 19 at 21:22
BernardBernard
177k779211
177k779211
What's the purpose offleqn
? I see no reason for it.
– egreg
Apr 19 at 21:32
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
Apr 19 at 21:43
add a comment |
What's the purpose offleqn
? I see no reason for it.
– egreg
Apr 19 at 21:32
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
Apr 19 at 21:43
What's the purpose of
fleqn
? I see no reason for it.– egreg
Apr 19 at 21:32
What's the purpose of
fleqn
? I see no reason for it.– egreg
Apr 19 at 21:32
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
Apr 19 at 21:43
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
Apr 19 at 21:43
add a comment |
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5
There exists an environment for that:
cases
.– marmot
Apr 19 at 20:35