How to save space when writing equations with cases?
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
begin{equation}
theta_{pk}=left{ begin{array}{ccc}
omega t+alpha+beta & , & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , & n=7,8,9,10,11,12,ldots
end{array}right.
end{equation}
math-mode spacing
asked 7 hours ago
nanjunnanjun
14016
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
begin{equation}
theta_{pk}=left{ begin{array}{ccc}
omega t+alpha+beta & , & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , & n=7,8,9,10,11,12,ldots
end{array}right.
end{equation}
math-mode spacing
asked 7 hours ago
nanjunnanjun
14016
5
There exists an environment for that:cases.
– marmot
7 hours ago
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
begin{equation}
theta_{pk}=left{ begin{array}{ccc}
omega t+alpha+beta & , & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , & n=7,8,9,10,11,12,ldots
end{array}right.
end{equation}
math-mode spacing
asked 7 hours ago
nanjunnanjun
14016
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
begin{equation}
theta_{pk}=left{ begin{array}{ccc}
omega t+alpha+beta & , & n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , & n=7,8,9,10,11,12,ldots
end{array}right.
end{equation}
math-mode spacing
math-mode spacing
asked 7 hours ago
nanjunnanjun
14016
asked 7 hours ago
nanjunnanjun
14016
asked 7 hours ago
nanjunnanjun
14016
asked 7 hours ago
nanjunnanjun
14016
asked 7 hours ago
nanjunnanjun
14016
14016
5
There exists an environment for that:cases.
– marmot
7 hours ago
add a comment |
5
There exists an environment for that:cases.
– marmot
7 hours ago
5
5
There exists an environment for that:
cases.– marmot
7 hours ago
There exists an environment for that:
cases.– marmot
7 hours ago
add a comment |
2 Answers
2
active
oldest
votes
as mentioned @marmot in comment, cases from amsmath is right toool for what you like obtain:
documentclass{IEEEtran}
usepackage{amsmath}
usepackage{lipsum} % for dummy text
begin{document}
lipsum[1]
begin{equation}
theta_{pk} =
begin{cases}
omega t+alpha+beta & , n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , n=7,8,9,10,11,12,ldots
end{cases}
end{equation}
lipsum[2-4]
end{document}
answered 6 hours ago
ZarkoZarko
130k869169
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
6 hours ago
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
6 hours ago
@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
43 mins ago
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.
documentclass{IEEEtran}
usepackage{amsmath, nccmath}
usepackage{lipsum} % for dummy text
begin{document}
lipsum[1]
begin{fleqn}
begin{equation}
theta_{pk} =
begin{cases}
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
end{cases}
end{equation}
end{fleqn}
lipsum[2-4]
end{document}
answered 6 hours ago
BernardBernard
176k778210
What's the purpose offleqn? I see no reason for it.
– egreg
6 hours ago
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
5 hours ago
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
as mentioned @marmot in comment, cases from amsmath is right toool for what you like obtain:
documentclass{IEEEtran}
usepackage{amsmath}
usepackage{lipsum} % for dummy text
begin{document}
lipsum[1]
begin{equation}
theta_{pk} =
begin{cases}
omega t+alpha+beta & , n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , n=7,8,9,10,11,12,ldots
end{cases}
end{equation}
lipsum[2-4]
end{document}
answered 6 hours ago
ZarkoZarko
130k869169
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
6 hours ago
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
6 hours ago
@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
43 mins ago
add a comment |
as mentioned @marmot in comment, cases from amsmath is right toool for what you like obtain:
documentclass{IEEEtran}
usepackage{amsmath}
usepackage{lipsum} % for dummy text
begin{document}
lipsum[1]
begin{equation}
theta_{pk} =
begin{cases}
omega t+alpha+beta & , n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , n=7,8,9,10,11,12,ldots
end{cases}
end{equation}
lipsum[2-4]
end{document}
answered 6 hours ago
ZarkoZarko
130k869169
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
6 hours ago
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
6 hours ago
@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
43 mins ago
add a comment |
as mentioned @marmot in comment, cases from amsmath is right toool for what you like obtain:
documentclass{IEEEtran}
usepackage{amsmath}
usepackage{lipsum} % for dummy text
begin{document}
lipsum[1]
begin{equation}
theta_{pk} =
begin{cases}
omega t+alpha+beta & , n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , n=7,8,9,10,11,12,ldots
end{cases}
end{equation}
lipsum[2-4]
end{document}
answered 6 hours ago
ZarkoZarko
130k869169
as mentioned @marmot in comment, cases from amsmath is right toool for what you like obtain:
documentclass{IEEEtran}
usepackage{amsmath}
usepackage{lipsum} % for dummy text
begin{document}
lipsum[1]
begin{equation}
theta_{pk} =
begin{cases}
omega t+alpha+beta & , n=1,2,3,4,5,6,ldots\
-omega t-alpha-beta & , n=7,8,9,10,11,12,ldots
end{cases}
end{equation}
lipsum[2-4]
end{document}
answered 6 hours ago
ZarkoZarko
130k869169
answered 6 hours ago
ZarkoZarko
130k869169
answered 6 hours ago
ZarkoZarko
130k869169
answered 6 hours ago
ZarkoZarko
130k869169
130k869169
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
6 hours ago
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
6 hours ago
@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
43 mins ago
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
6 hours ago
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
6 hours ago
@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
43 mins ago
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
6 hours ago
Is it possible to reduce the space before the commas if I have slightly longer equations to fit in the column?
– nanjun
6 hours ago
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
6 hours ago
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
6 hours ago
@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
43 mins ago
@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
43 mins ago
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.
documentclass{IEEEtran}
usepackage{amsmath, nccmath}
usepackage{lipsum} % for dummy text
begin{document}
lipsum[1]
begin{fleqn}
begin{equation}
theta_{pk} =
begin{cases}
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
end{cases}
end{equation}
end{fleqn}
lipsum[2-4]
end{document}
answered 6 hours ago
BernardBernard
176k778210
What's the purpose offleqn? I see no reason for it.
– egreg
6 hours ago
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
5 hours ago
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.
documentclass{IEEEtran}
usepackage{amsmath, nccmath}
usepackage{lipsum} % for dummy text
begin{document}
lipsum[1]
begin{fleqn}
begin{equation}
theta_{pk} =
begin{cases}
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
end{cases}
end{equation}
end{fleqn}
lipsum[2-4]
end{document}
answered 6 hours ago
BernardBernard
176k778210
What's the purpose offleqn? I see no reason for it.
– egreg
6 hours ago
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
5 hours ago
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.
documentclass{IEEEtran}
usepackage{amsmath, nccmath}
usepackage{lipsum} % for dummy text
begin{document}
lipsum[1]
begin{fleqn}
begin{equation}
theta_{pk} =
begin{cases}
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
end{cases}
end{equation}
end{fleqn}
lipsum[2-4]
end{document}
answered 6 hours ago
BernardBernard
176k778210
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.
documentclass{IEEEtran}
usepackage{amsmath, nccmath}
usepackage{lipsum} % for dummy text
begin{document}
lipsum[1]
begin{fleqn}
begin{equation}
theta_{pk} =
begin{cases}
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
end{cases}
end{equation}
end{fleqn}
lipsum[2-4]
end{document}
answered 6 hours ago
BernardBernard
176k778210
answered 6 hours ago
BernardBernard
176k778210
answered 6 hours ago
BernardBernard
176k778210
answered 6 hours ago
BernardBernard
176k778210
176k778210
What's the purpose offleqn? I see no reason for it.
– egreg
6 hours ago
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
5 hours ago
add a comment |
What's the purpose offleqn? I see no reason for it.
– egreg
6 hours ago
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
5 hours ago
What's the purpose of
fleqn? I see no reason for it.– egreg
6 hours ago
What's the purpose of
fleqn? I see no reason for it.– egreg
6 hours ago
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
5 hours ago
@egreg: Inside this environment, the equations are flushleft, while being aligned, gathered, &c. This can save some space.
– Bernard
5 hours ago
add a comment |
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5
There exists an environment for that:
cases.– marmot
7 hours ago