How do I nest cases?
I am new to LaTeX. I know how to write basic equations in LaTeX. However, the following equation seems to be too difficult for me. Please help me with this. Thank you.
math-mode equations cases
add a comment |
I am new to LaTeX. I know how to write basic equations in LaTeX. However, the following equation seems to be too difficult for me. Please help me with this. Thank you.
math-mode equations cases
add a comment |
I am new to LaTeX. I know how to write basic equations in LaTeX. However, the following equation seems to be too difficult for me. Please help me with this. Thank you.
math-mode equations cases
I am new to LaTeX. I know how to write basic equations in LaTeX. However, the following equation seems to be too difficult for me. Please help me with this. Thank you.
math-mode equations cases
math-mode equations cases
edited Mar 24 at 15:58
JouleV
10.3k22558
10.3k22558
asked Mar 24 at 6:00
Nahid HossainNahid Hossain
513
513
add a comment |
add a comment |
3 Answers
3
active
oldest
votes
I'd not use the inner brace, but a standard notation for the minimum, just split across lines.
documentclass{article}
usepackage{amsmath}
DeclareMathOperator{lev}{lev}
begin{document}
begin{equation*}
lev_{a,b}(i,j)=
begin{cases}
max(i,j) & text{if $min(i,j)=0$,} \[1ex]
begin{aligned}[b]
minbigl(lev_{a,b}&(i-1,j)+1, \
lev_{a,b}&(i,j-1)+1, \
lev_{a,b}&(i-1,j-1)+1_{(a_ine b_j)}
bigr)
end{aligned} & text{otherwise.}
end{cases}
end{equation*}
end{document}
You might prefer the following realization, which is obtained by using begin{aligned}
instead of begin{aligned}[b]
.
It works. Thank you.
– Nahid Hossain
Mar 25 at 13:27
add a comment |
amsmath
's cases
is defined for this. The horizontal space between the bracket and the inside contents is very good.
documentclass{article}
usepackage{amsmath}
begin{document}
[
mathrm{lev}_{a,b}(i,j)=begin{cases}
max(i,j)&text{if $min(i,j)=0$,}\
minbegin{cases}
mathrm{lev}_{a,b}(i-1,j)+1\
mathrm{lev}_{a,b}(i,j-1)+1\
mathrm{lev}_{a,b}(i-1,j-1)+1_{(a_ine b_j)}
end{cases} &text{otherwise.}
end{cases}
]
end{document}
It seems to me that you are writing a document which uses lev() function quite often. In this case, you should define a new macro to avoid repetition (I use DeclareMathOperator
, which is the best way for this, thanks to egreg's suggestion in his comment).
documentclass{article}
usepackage{amsmath}
%newcommand{lev}{mathrm{lev}}: not good
DeclareMathOperator{lev}{lev}
begin{document}
[
lev_{a,b}(i,j)=begin{cases}
max(i,j)&text{if $min(i,j)=0$,}\
minbegin{cases}
lev_{a,b}(i-1,j)+1\
lev_{a,b}(i,j-1)+1\
lev_{a,b}(i-1,j-1)+1_{(a_ine b_j)}
end{cases} &text{otherwise.}
end{cases}
]
end{document}
add a comment |
If you use the function lev
a lot then it is a good idea to define it as follows
newcommand{lev}[2]{mathrm{lev}_{a, thinspace b} (#1, thinspace #2)}
Just type lev
and you will get the function with two arguments to enter.
documentclass{article}
usepackage{amsmath}
usepackage{booktabs}
usepackage{array}
begin{document}
newcommand{lev}[2]{mathrm{lev}_{a, thinspace b} (#1, thinspace #2)}
begin{equation}
lev{i}{j} = leftlbrace
begin{array}{l l}
max(i, thinspace j) & text{if~} min(i, thinspace j) =0,
\
min leftlbrace hspace{-1mm}
begin{array}{l}
lev{i-1}{j} + 1
\
addlinespace[0.5mm]
lev{i}{j-1} + 1
\
addlinespace[0.5mm]
lev{i-1}{j-1} + 1_{(a_{i} neq b_{j})}
end{array}
right. & text{otherwise}.
end{array}
right.
end{equation}
end{document}
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
I'd not use the inner brace, but a standard notation for the minimum, just split across lines.
documentclass{article}
usepackage{amsmath}
DeclareMathOperator{lev}{lev}
begin{document}
begin{equation*}
lev_{a,b}(i,j)=
begin{cases}
max(i,j) & text{if $min(i,j)=0$,} \[1ex]
begin{aligned}[b]
minbigl(lev_{a,b}&(i-1,j)+1, \
lev_{a,b}&(i,j-1)+1, \
lev_{a,b}&(i-1,j-1)+1_{(a_ine b_j)}
bigr)
end{aligned} & text{otherwise.}
end{cases}
end{equation*}
end{document}
You might prefer the following realization, which is obtained by using begin{aligned}
instead of begin{aligned}[b]
.
It works. Thank you.
– Nahid Hossain
Mar 25 at 13:27
add a comment |
I'd not use the inner brace, but a standard notation for the minimum, just split across lines.
documentclass{article}
usepackage{amsmath}
DeclareMathOperator{lev}{lev}
begin{document}
begin{equation*}
lev_{a,b}(i,j)=
begin{cases}
max(i,j) & text{if $min(i,j)=0$,} \[1ex]
begin{aligned}[b]
minbigl(lev_{a,b}&(i-1,j)+1, \
lev_{a,b}&(i,j-1)+1, \
lev_{a,b}&(i-1,j-1)+1_{(a_ine b_j)}
bigr)
end{aligned} & text{otherwise.}
end{cases}
end{equation*}
end{document}
You might prefer the following realization, which is obtained by using begin{aligned}
instead of begin{aligned}[b]
.
It works. Thank you.
– Nahid Hossain
Mar 25 at 13:27
add a comment |
I'd not use the inner brace, but a standard notation for the minimum, just split across lines.
documentclass{article}
usepackage{amsmath}
DeclareMathOperator{lev}{lev}
begin{document}
begin{equation*}
lev_{a,b}(i,j)=
begin{cases}
max(i,j) & text{if $min(i,j)=0$,} \[1ex]
begin{aligned}[b]
minbigl(lev_{a,b}&(i-1,j)+1, \
lev_{a,b}&(i,j-1)+1, \
lev_{a,b}&(i-1,j-1)+1_{(a_ine b_j)}
bigr)
end{aligned} & text{otherwise.}
end{cases}
end{equation*}
end{document}
You might prefer the following realization, which is obtained by using begin{aligned}
instead of begin{aligned}[b]
.
I'd not use the inner brace, but a standard notation for the minimum, just split across lines.
documentclass{article}
usepackage{amsmath}
DeclareMathOperator{lev}{lev}
begin{document}
begin{equation*}
lev_{a,b}(i,j)=
begin{cases}
max(i,j) & text{if $min(i,j)=0$,} \[1ex]
begin{aligned}[b]
minbigl(lev_{a,b}&(i-1,j)+1, \
lev_{a,b}&(i,j-1)+1, \
lev_{a,b}&(i-1,j-1)+1_{(a_ine b_j)}
bigr)
end{aligned} & text{otherwise.}
end{cases}
end{equation*}
end{document}
You might prefer the following realization, which is obtained by using begin{aligned}
instead of begin{aligned}[b]
.
answered Mar 24 at 10:08
egregegreg
731k8919303250
731k8919303250
It works. Thank you.
– Nahid Hossain
Mar 25 at 13:27
add a comment |
It works. Thank you.
– Nahid Hossain
Mar 25 at 13:27
It works. Thank you.
– Nahid Hossain
Mar 25 at 13:27
It works. Thank you.
– Nahid Hossain
Mar 25 at 13:27
add a comment |
amsmath
's cases
is defined for this. The horizontal space between the bracket and the inside contents is very good.
documentclass{article}
usepackage{amsmath}
begin{document}
[
mathrm{lev}_{a,b}(i,j)=begin{cases}
max(i,j)&text{if $min(i,j)=0$,}\
minbegin{cases}
mathrm{lev}_{a,b}(i-1,j)+1\
mathrm{lev}_{a,b}(i,j-1)+1\
mathrm{lev}_{a,b}(i-1,j-1)+1_{(a_ine b_j)}
end{cases} &text{otherwise.}
end{cases}
]
end{document}
It seems to me that you are writing a document which uses lev() function quite often. In this case, you should define a new macro to avoid repetition (I use DeclareMathOperator
, which is the best way for this, thanks to egreg's suggestion in his comment).
documentclass{article}
usepackage{amsmath}
%newcommand{lev}{mathrm{lev}}: not good
DeclareMathOperator{lev}{lev}
begin{document}
[
lev_{a,b}(i,j)=begin{cases}
max(i,j)&text{if $min(i,j)=0$,}\
minbegin{cases}
lev_{a,b}(i-1,j)+1\
lev_{a,b}(i,j-1)+1\
lev_{a,b}(i-1,j-1)+1_{(a_ine b_j)}
end{cases} &text{otherwise.}
end{cases}
]
end{document}
add a comment |
amsmath
's cases
is defined for this. The horizontal space between the bracket and the inside contents is very good.
documentclass{article}
usepackage{amsmath}
begin{document}
[
mathrm{lev}_{a,b}(i,j)=begin{cases}
max(i,j)&text{if $min(i,j)=0$,}\
minbegin{cases}
mathrm{lev}_{a,b}(i-1,j)+1\
mathrm{lev}_{a,b}(i,j-1)+1\
mathrm{lev}_{a,b}(i-1,j-1)+1_{(a_ine b_j)}
end{cases} &text{otherwise.}
end{cases}
]
end{document}
It seems to me that you are writing a document which uses lev() function quite often. In this case, you should define a new macro to avoid repetition (I use DeclareMathOperator
, which is the best way for this, thanks to egreg's suggestion in his comment).
documentclass{article}
usepackage{amsmath}
%newcommand{lev}{mathrm{lev}}: not good
DeclareMathOperator{lev}{lev}
begin{document}
[
lev_{a,b}(i,j)=begin{cases}
max(i,j)&text{if $min(i,j)=0$,}\
minbegin{cases}
lev_{a,b}(i-1,j)+1\
lev_{a,b}(i,j-1)+1\
lev_{a,b}(i-1,j-1)+1_{(a_ine b_j)}
end{cases} &text{otherwise.}
end{cases}
]
end{document}
add a comment |
amsmath
's cases
is defined for this. The horizontal space between the bracket and the inside contents is very good.
documentclass{article}
usepackage{amsmath}
begin{document}
[
mathrm{lev}_{a,b}(i,j)=begin{cases}
max(i,j)&text{if $min(i,j)=0$,}\
minbegin{cases}
mathrm{lev}_{a,b}(i-1,j)+1\
mathrm{lev}_{a,b}(i,j-1)+1\
mathrm{lev}_{a,b}(i-1,j-1)+1_{(a_ine b_j)}
end{cases} &text{otherwise.}
end{cases}
]
end{document}
It seems to me that you are writing a document which uses lev() function quite often. In this case, you should define a new macro to avoid repetition (I use DeclareMathOperator
, which is the best way for this, thanks to egreg's suggestion in his comment).
documentclass{article}
usepackage{amsmath}
%newcommand{lev}{mathrm{lev}}: not good
DeclareMathOperator{lev}{lev}
begin{document}
[
lev_{a,b}(i,j)=begin{cases}
max(i,j)&text{if $min(i,j)=0$,}\
minbegin{cases}
lev_{a,b}(i-1,j)+1\
lev_{a,b}(i,j-1)+1\
lev_{a,b}(i-1,j-1)+1_{(a_ine b_j)}
end{cases} &text{otherwise.}
end{cases}
]
end{document}
amsmath
's cases
is defined for this. The horizontal space between the bracket and the inside contents is very good.
documentclass{article}
usepackage{amsmath}
begin{document}
[
mathrm{lev}_{a,b}(i,j)=begin{cases}
max(i,j)&text{if $min(i,j)=0$,}\
minbegin{cases}
mathrm{lev}_{a,b}(i-1,j)+1\
mathrm{lev}_{a,b}(i,j-1)+1\
mathrm{lev}_{a,b}(i-1,j-1)+1_{(a_ine b_j)}
end{cases} &text{otherwise.}
end{cases}
]
end{document}
It seems to me that you are writing a document which uses lev() function quite often. In this case, you should define a new macro to avoid repetition (I use DeclareMathOperator
, which is the best way for this, thanks to egreg's suggestion in his comment).
documentclass{article}
usepackage{amsmath}
%newcommand{lev}{mathrm{lev}}: not good
DeclareMathOperator{lev}{lev}
begin{document}
[
lev_{a,b}(i,j)=begin{cases}
max(i,j)&text{if $min(i,j)=0$,}\
minbegin{cases}
lev_{a,b}(i-1,j)+1\
lev_{a,b}(i,j-1)+1\
lev_{a,b}(i-1,j-1)+1_{(a_ine b_j)}
end{cases} &text{otherwise.}
end{cases}
]
end{document}
edited Mar 24 at 14:07
answered Mar 24 at 6:09
JouleVJouleV
10.3k22558
10.3k22558
add a comment |
add a comment |
If you use the function lev
a lot then it is a good idea to define it as follows
newcommand{lev}[2]{mathrm{lev}_{a, thinspace b} (#1, thinspace #2)}
Just type lev
and you will get the function with two arguments to enter.
documentclass{article}
usepackage{amsmath}
usepackage{booktabs}
usepackage{array}
begin{document}
newcommand{lev}[2]{mathrm{lev}_{a, thinspace b} (#1, thinspace #2)}
begin{equation}
lev{i}{j} = leftlbrace
begin{array}{l l}
max(i, thinspace j) & text{if~} min(i, thinspace j) =0,
\
min leftlbrace hspace{-1mm}
begin{array}{l}
lev{i-1}{j} + 1
\
addlinespace[0.5mm]
lev{i}{j-1} + 1
\
addlinespace[0.5mm]
lev{i-1}{j-1} + 1_{(a_{i} neq b_{j})}
end{array}
right. & text{otherwise}.
end{array}
right.
end{equation}
end{document}
add a comment |
If you use the function lev
a lot then it is a good idea to define it as follows
newcommand{lev}[2]{mathrm{lev}_{a, thinspace b} (#1, thinspace #2)}
Just type lev
and you will get the function with two arguments to enter.
documentclass{article}
usepackage{amsmath}
usepackage{booktabs}
usepackage{array}
begin{document}
newcommand{lev}[2]{mathrm{lev}_{a, thinspace b} (#1, thinspace #2)}
begin{equation}
lev{i}{j} = leftlbrace
begin{array}{l l}
max(i, thinspace j) & text{if~} min(i, thinspace j) =0,
\
min leftlbrace hspace{-1mm}
begin{array}{l}
lev{i-1}{j} + 1
\
addlinespace[0.5mm]
lev{i}{j-1} + 1
\
addlinespace[0.5mm]
lev{i-1}{j-1} + 1_{(a_{i} neq b_{j})}
end{array}
right. & text{otherwise}.
end{array}
right.
end{equation}
end{document}
add a comment |
If you use the function lev
a lot then it is a good idea to define it as follows
newcommand{lev}[2]{mathrm{lev}_{a, thinspace b} (#1, thinspace #2)}
Just type lev
and you will get the function with two arguments to enter.
documentclass{article}
usepackage{amsmath}
usepackage{booktabs}
usepackage{array}
begin{document}
newcommand{lev}[2]{mathrm{lev}_{a, thinspace b} (#1, thinspace #2)}
begin{equation}
lev{i}{j} = leftlbrace
begin{array}{l l}
max(i, thinspace j) & text{if~} min(i, thinspace j) =0,
\
min leftlbrace hspace{-1mm}
begin{array}{l}
lev{i-1}{j} + 1
\
addlinespace[0.5mm]
lev{i}{j-1} + 1
\
addlinespace[0.5mm]
lev{i-1}{j-1} + 1_{(a_{i} neq b_{j})}
end{array}
right. & text{otherwise}.
end{array}
right.
end{equation}
end{document}
If you use the function lev
a lot then it is a good idea to define it as follows
newcommand{lev}[2]{mathrm{lev}_{a, thinspace b} (#1, thinspace #2)}
Just type lev
and you will get the function with two arguments to enter.
documentclass{article}
usepackage{amsmath}
usepackage{booktabs}
usepackage{array}
begin{document}
newcommand{lev}[2]{mathrm{lev}_{a, thinspace b} (#1, thinspace #2)}
begin{equation}
lev{i}{j} = leftlbrace
begin{array}{l l}
max(i, thinspace j) & text{if~} min(i, thinspace j) =0,
\
min leftlbrace hspace{-1mm}
begin{array}{l}
lev{i-1}{j} + 1
\
addlinespace[0.5mm]
lev{i}{j-1} + 1
\
addlinespace[0.5mm]
lev{i-1}{j-1} + 1_{(a_{i} neq b_{j})}
end{array}
right. & text{otherwise}.
end{array}
right.
end{equation}
end{document}
answered Mar 24 at 6:17
Al-Motasem AldaoudeyehAl-Motasem Aldaoudeyeh
1,871414
1,871414
add a comment |
add a comment |
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