How to have two separate right curly bracket in align or equation environment?












4














I essentially want to get my equation to look like this, but can't quite get it. I've used drcases but then the alignment is difficult. I've also tried empheq, but still having issues. Any ideas?












share|improve this question



























    4














    I essentially want to get my equation to look like this, but can't quite get it. I've used drcases but then the alignment is difficult. I've also tried empheq, but still having issues. Any ideas?












    share|improve this question

























      4












      4








      4







      I essentially want to get my equation to look like this, but can't quite get it. I've used drcases but then the alignment is difficult. I've also tried empheq, but still having issues. Any ideas?












      share|improve this question













      I essentially want to get my equation to look like this, but can't quite get it. I've used drcases but then the alignment is difficult. I've also tried empheq, but still having issues. Any ideas?









      cases






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 26 '18 at 18:13









      C.Hegg

      211




      211






















          3 Answers
          3






          active

          oldest

          votes


















          5














          You can use aligned inside dcases from the mathtools package. This is how the picture aligned.



          documentclass[a4paper]{article}
          usepackage{mathtools}

          begin{document}

          begin{equation}
          begin{dcases}left.
          begin{aligned}
          frac{dG(t)}{dt} &= G_{in} - sigma_2G - aleft(c+frac{mI}{n+I}right)G + b \
          frac{dI(t)}{dt} &= frac{sigma_1G^2}{alpha_1^2+G^2} - d_iI(t)
          end{aligned} right }, quad t ne k_tau, & \
          left.
          begin{aligned}
          G(t^+) &= G(t) \
          I(t^+) &= I(t) + sigma
          end{aligned} right }, quad t = k_tau, &
          end{dcases}
          end{equation}

          end{document}


          enter image description here



          Update:



          You can also align all the equation at the = sign like this:



          documentclass[a4paper]{article}
          usepackage{mathtools,calc}

          newlength{lhs}
          settowidth{lhs}{ $frac{dG(t)}{dt}$ }
          newcommand{lhsbox}[1]{makebox[lhs][r]{$displaystyle#1$}}

          begin{document}

          begin{equation}
          begin{dcases}left.
          begin{aligned}
          lhsbox{frac{dG(t)}{dt}} &= G_{in} - sigma_2G - aleft(c+frac{mI}{n+I}right)G + b \
          lhsbox{frac{dI(t)}{dt}} &= frac{sigma_1G^2}{alpha_1^2+G^2} - d_iI(t)
          end{aligned} right }, quad t ne k_tau, & \
          left.
          begin{aligned}
          lhsbox{G(t^+)} &= G(t) \
          lhsbox{I(t^+)} &= I(t) + sigma
          end{aligned} right }, quad t = k_tau, &
          end{dcases}
          end{equation}

          end{document}


          enter image description here






          share|improve this answer























          • That looks really good. Is there anyway one could make the equals sign aligned instead of just flush left?
            – C.Hegg
            Nov 26 '18 at 18:45










          • Yes, please see my update
            – AboAmmar
            Nov 26 '18 at 18:52










          • Of course, what I meant is that the equal signs are only lined up in each aligned environment separately, I know this isnt what I asked, but if one of the equations we had an extra term on the LHS, then all 4 equal signs would no longer be aligned.
            – C.Hegg
            Nov 26 '18 at 19:01



















          3














          The following uses eqparbox's eqmakebox[<tag>][<align>]{<stuff>} to ensure all <stuff> with the same <tag> is set in a box of maximum width with the appropriate <align>ment. This automates the process of aligning the equation left-hand sides:



          enter image description here



          documentclass{article}

          usepackage{mathtools,eqparbox}

          begin{document}

          begin{equation}
          begin{dcases}
          left. begin{aligned}
          & eqmakebox[LHS][r]{$dfrac{mathrm{d}G(t)}{mathrm{d}t}$}
          = G_{in} - sigma_2 G - a left(c + frac{mI}{n + I} right) G + b \
          & eqmakebox[LHS][r]{$dfrac{mathrm{d}I(t)}{mathrm{d}t}$}
          = frac{sigma_1 G^2}{alpha_1^2 + G^2} - d_i I(t)
          end{aligned} right } quad t neq k_tau, \
          left. begin{aligned}
          & eqmakebox[LHS][r]{$G(t^+)$} = G(t) \
          & eqmakebox[LHS][r]{$I(t^+)$} = I(t) + sigma
          end{aligned} right } quad t = k_tau
          end{dcases}
          end{equation}

          end{document}





          share|improve this answer





















          • Perfect! thank you so much!
            – C.Hegg
            Nov 26 '18 at 19:07



















          2














          Here's a solution that employs nested array environments.



          enter image description here



          documentclass{article}
          usepackage{array,booktabs}
          newcolumntype{L}{>{displaystyle}l}
          begin{document}
          [
          renewcommandarraystretch{1.33}
          setlengtharraycolsep{0pt}
          left{
          begin{array}{L}
          left.
          begin{array}{L}
          a = ldfjdl;kfsja ;kfja;ksdljfa\
          b = asjfl;a ;adjfl;asj ;adjfals
          end{array}
          right}
          ,quad tne kr,. \ addlinespace
          left.
          begin{array}{L}
          c = jfdals;jkf\
          d = dsalfjasl;fja
          end{array}
          right}
          ,quad t=kr,.
          end{array}
          right.
          ]


          end{document}






          share|improve this answer





















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            3 Answers
            3






            active

            oldest

            votes








            3 Answers
            3






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            5














            You can use aligned inside dcases from the mathtools package. This is how the picture aligned.



            documentclass[a4paper]{article}
            usepackage{mathtools}

            begin{document}

            begin{equation}
            begin{dcases}left.
            begin{aligned}
            frac{dG(t)}{dt} &= G_{in} - sigma_2G - aleft(c+frac{mI}{n+I}right)G + b \
            frac{dI(t)}{dt} &= frac{sigma_1G^2}{alpha_1^2+G^2} - d_iI(t)
            end{aligned} right }, quad t ne k_tau, & \
            left.
            begin{aligned}
            G(t^+) &= G(t) \
            I(t^+) &= I(t) + sigma
            end{aligned} right }, quad t = k_tau, &
            end{dcases}
            end{equation}

            end{document}


            enter image description here



            Update:



            You can also align all the equation at the = sign like this:



            documentclass[a4paper]{article}
            usepackage{mathtools,calc}

            newlength{lhs}
            settowidth{lhs}{ $frac{dG(t)}{dt}$ }
            newcommand{lhsbox}[1]{makebox[lhs][r]{$displaystyle#1$}}

            begin{document}

            begin{equation}
            begin{dcases}left.
            begin{aligned}
            lhsbox{frac{dG(t)}{dt}} &= G_{in} - sigma_2G - aleft(c+frac{mI}{n+I}right)G + b \
            lhsbox{frac{dI(t)}{dt}} &= frac{sigma_1G^2}{alpha_1^2+G^2} - d_iI(t)
            end{aligned} right }, quad t ne k_tau, & \
            left.
            begin{aligned}
            lhsbox{G(t^+)} &= G(t) \
            lhsbox{I(t^+)} &= I(t) + sigma
            end{aligned} right }, quad t = k_tau, &
            end{dcases}
            end{equation}

            end{document}


            enter image description here






            share|improve this answer























            • That looks really good. Is there anyway one could make the equals sign aligned instead of just flush left?
              – C.Hegg
              Nov 26 '18 at 18:45










            • Yes, please see my update
              – AboAmmar
              Nov 26 '18 at 18:52










            • Of course, what I meant is that the equal signs are only lined up in each aligned environment separately, I know this isnt what I asked, but if one of the equations we had an extra term on the LHS, then all 4 equal signs would no longer be aligned.
              – C.Hegg
              Nov 26 '18 at 19:01
















            5














            You can use aligned inside dcases from the mathtools package. This is how the picture aligned.



            documentclass[a4paper]{article}
            usepackage{mathtools}

            begin{document}

            begin{equation}
            begin{dcases}left.
            begin{aligned}
            frac{dG(t)}{dt} &= G_{in} - sigma_2G - aleft(c+frac{mI}{n+I}right)G + b \
            frac{dI(t)}{dt} &= frac{sigma_1G^2}{alpha_1^2+G^2} - d_iI(t)
            end{aligned} right }, quad t ne k_tau, & \
            left.
            begin{aligned}
            G(t^+) &= G(t) \
            I(t^+) &= I(t) + sigma
            end{aligned} right }, quad t = k_tau, &
            end{dcases}
            end{equation}

            end{document}


            enter image description here



            Update:



            You can also align all the equation at the = sign like this:



            documentclass[a4paper]{article}
            usepackage{mathtools,calc}

            newlength{lhs}
            settowidth{lhs}{ $frac{dG(t)}{dt}$ }
            newcommand{lhsbox}[1]{makebox[lhs][r]{$displaystyle#1$}}

            begin{document}

            begin{equation}
            begin{dcases}left.
            begin{aligned}
            lhsbox{frac{dG(t)}{dt}} &= G_{in} - sigma_2G - aleft(c+frac{mI}{n+I}right)G + b \
            lhsbox{frac{dI(t)}{dt}} &= frac{sigma_1G^2}{alpha_1^2+G^2} - d_iI(t)
            end{aligned} right }, quad t ne k_tau, & \
            left.
            begin{aligned}
            lhsbox{G(t^+)} &= G(t) \
            lhsbox{I(t^+)} &= I(t) + sigma
            end{aligned} right }, quad t = k_tau, &
            end{dcases}
            end{equation}

            end{document}


            enter image description here






            share|improve this answer























            • That looks really good. Is there anyway one could make the equals sign aligned instead of just flush left?
              – C.Hegg
              Nov 26 '18 at 18:45










            • Yes, please see my update
              – AboAmmar
              Nov 26 '18 at 18:52










            • Of course, what I meant is that the equal signs are only lined up in each aligned environment separately, I know this isnt what I asked, but if one of the equations we had an extra term on the LHS, then all 4 equal signs would no longer be aligned.
              – C.Hegg
              Nov 26 '18 at 19:01














            5












            5








            5






            You can use aligned inside dcases from the mathtools package. This is how the picture aligned.



            documentclass[a4paper]{article}
            usepackage{mathtools}

            begin{document}

            begin{equation}
            begin{dcases}left.
            begin{aligned}
            frac{dG(t)}{dt} &= G_{in} - sigma_2G - aleft(c+frac{mI}{n+I}right)G + b \
            frac{dI(t)}{dt} &= frac{sigma_1G^2}{alpha_1^2+G^2} - d_iI(t)
            end{aligned} right }, quad t ne k_tau, & \
            left.
            begin{aligned}
            G(t^+) &= G(t) \
            I(t^+) &= I(t) + sigma
            end{aligned} right }, quad t = k_tau, &
            end{dcases}
            end{equation}

            end{document}


            enter image description here



            Update:



            You can also align all the equation at the = sign like this:



            documentclass[a4paper]{article}
            usepackage{mathtools,calc}

            newlength{lhs}
            settowidth{lhs}{ $frac{dG(t)}{dt}$ }
            newcommand{lhsbox}[1]{makebox[lhs][r]{$displaystyle#1$}}

            begin{document}

            begin{equation}
            begin{dcases}left.
            begin{aligned}
            lhsbox{frac{dG(t)}{dt}} &= G_{in} - sigma_2G - aleft(c+frac{mI}{n+I}right)G + b \
            lhsbox{frac{dI(t)}{dt}} &= frac{sigma_1G^2}{alpha_1^2+G^2} - d_iI(t)
            end{aligned} right }, quad t ne k_tau, & \
            left.
            begin{aligned}
            lhsbox{G(t^+)} &= G(t) \
            lhsbox{I(t^+)} &= I(t) + sigma
            end{aligned} right }, quad t = k_tau, &
            end{dcases}
            end{equation}

            end{document}


            enter image description here






            share|improve this answer














            You can use aligned inside dcases from the mathtools package. This is how the picture aligned.



            documentclass[a4paper]{article}
            usepackage{mathtools}

            begin{document}

            begin{equation}
            begin{dcases}left.
            begin{aligned}
            frac{dG(t)}{dt} &= G_{in} - sigma_2G - aleft(c+frac{mI}{n+I}right)G + b \
            frac{dI(t)}{dt} &= frac{sigma_1G^2}{alpha_1^2+G^2} - d_iI(t)
            end{aligned} right }, quad t ne k_tau, & \
            left.
            begin{aligned}
            G(t^+) &= G(t) \
            I(t^+) &= I(t) + sigma
            end{aligned} right }, quad t = k_tau, &
            end{dcases}
            end{equation}

            end{document}


            enter image description here



            Update:



            You can also align all the equation at the = sign like this:



            documentclass[a4paper]{article}
            usepackage{mathtools,calc}

            newlength{lhs}
            settowidth{lhs}{ $frac{dG(t)}{dt}$ }
            newcommand{lhsbox}[1]{makebox[lhs][r]{$displaystyle#1$}}

            begin{document}

            begin{equation}
            begin{dcases}left.
            begin{aligned}
            lhsbox{frac{dG(t)}{dt}} &= G_{in} - sigma_2G - aleft(c+frac{mI}{n+I}right)G + b \
            lhsbox{frac{dI(t)}{dt}} &= frac{sigma_1G^2}{alpha_1^2+G^2} - d_iI(t)
            end{aligned} right }, quad t ne k_tau, & \
            left.
            begin{aligned}
            lhsbox{G(t^+)} &= G(t) \
            lhsbox{I(t^+)} &= I(t) + sigma
            end{aligned} right }, quad t = k_tau, &
            end{dcases}
            end{equation}

            end{document}


            enter image description here







            share|improve this answer














            share|improve this answer



            share|improve this answer








            edited Nov 26 '18 at 19:07

























            answered Nov 26 '18 at 18:38









            AboAmmar

            33.1k22882




            33.1k22882












            • That looks really good. Is there anyway one could make the equals sign aligned instead of just flush left?
              – C.Hegg
              Nov 26 '18 at 18:45










            • Yes, please see my update
              – AboAmmar
              Nov 26 '18 at 18:52










            • Of course, what I meant is that the equal signs are only lined up in each aligned environment separately, I know this isnt what I asked, but if one of the equations we had an extra term on the LHS, then all 4 equal signs would no longer be aligned.
              – C.Hegg
              Nov 26 '18 at 19:01


















            • That looks really good. Is there anyway one could make the equals sign aligned instead of just flush left?
              – C.Hegg
              Nov 26 '18 at 18:45










            • Yes, please see my update
              – AboAmmar
              Nov 26 '18 at 18:52










            • Of course, what I meant is that the equal signs are only lined up in each aligned environment separately, I know this isnt what I asked, but if one of the equations we had an extra term on the LHS, then all 4 equal signs would no longer be aligned.
              – C.Hegg
              Nov 26 '18 at 19:01
















            That looks really good. Is there anyway one could make the equals sign aligned instead of just flush left?
            – C.Hegg
            Nov 26 '18 at 18:45




            That looks really good. Is there anyway one could make the equals sign aligned instead of just flush left?
            – C.Hegg
            Nov 26 '18 at 18:45












            Yes, please see my update
            – AboAmmar
            Nov 26 '18 at 18:52




            Yes, please see my update
            – AboAmmar
            Nov 26 '18 at 18:52












            Of course, what I meant is that the equal signs are only lined up in each aligned environment separately, I know this isnt what I asked, but if one of the equations we had an extra term on the LHS, then all 4 equal signs would no longer be aligned.
            – C.Hegg
            Nov 26 '18 at 19:01




            Of course, what I meant is that the equal signs are only lined up in each aligned environment separately, I know this isnt what I asked, but if one of the equations we had an extra term on the LHS, then all 4 equal signs would no longer be aligned.
            – C.Hegg
            Nov 26 '18 at 19:01











            3














            The following uses eqparbox's eqmakebox[<tag>][<align>]{<stuff>} to ensure all <stuff> with the same <tag> is set in a box of maximum width with the appropriate <align>ment. This automates the process of aligning the equation left-hand sides:



            enter image description here



            documentclass{article}

            usepackage{mathtools,eqparbox}

            begin{document}

            begin{equation}
            begin{dcases}
            left. begin{aligned}
            & eqmakebox[LHS][r]{$dfrac{mathrm{d}G(t)}{mathrm{d}t}$}
            = G_{in} - sigma_2 G - a left(c + frac{mI}{n + I} right) G + b \
            & eqmakebox[LHS][r]{$dfrac{mathrm{d}I(t)}{mathrm{d}t}$}
            = frac{sigma_1 G^2}{alpha_1^2 + G^2} - d_i I(t)
            end{aligned} right } quad t neq k_tau, \
            left. begin{aligned}
            & eqmakebox[LHS][r]{$G(t^+)$} = G(t) \
            & eqmakebox[LHS][r]{$I(t^+)$} = I(t) + sigma
            end{aligned} right } quad t = k_tau
            end{dcases}
            end{equation}

            end{document}





            share|improve this answer





















            • Perfect! thank you so much!
              – C.Hegg
              Nov 26 '18 at 19:07
















            3














            The following uses eqparbox's eqmakebox[<tag>][<align>]{<stuff>} to ensure all <stuff> with the same <tag> is set in a box of maximum width with the appropriate <align>ment. This automates the process of aligning the equation left-hand sides:



            enter image description here



            documentclass{article}

            usepackage{mathtools,eqparbox}

            begin{document}

            begin{equation}
            begin{dcases}
            left. begin{aligned}
            & eqmakebox[LHS][r]{$dfrac{mathrm{d}G(t)}{mathrm{d}t}$}
            = G_{in} - sigma_2 G - a left(c + frac{mI}{n + I} right) G + b \
            & eqmakebox[LHS][r]{$dfrac{mathrm{d}I(t)}{mathrm{d}t}$}
            = frac{sigma_1 G^2}{alpha_1^2 + G^2} - d_i I(t)
            end{aligned} right } quad t neq k_tau, \
            left. begin{aligned}
            & eqmakebox[LHS][r]{$G(t^+)$} = G(t) \
            & eqmakebox[LHS][r]{$I(t^+)$} = I(t) + sigma
            end{aligned} right } quad t = k_tau
            end{dcases}
            end{equation}

            end{document}





            share|improve this answer





















            • Perfect! thank you so much!
              – C.Hegg
              Nov 26 '18 at 19:07














            3












            3








            3






            The following uses eqparbox's eqmakebox[<tag>][<align>]{<stuff>} to ensure all <stuff> with the same <tag> is set in a box of maximum width with the appropriate <align>ment. This automates the process of aligning the equation left-hand sides:



            enter image description here



            documentclass{article}

            usepackage{mathtools,eqparbox}

            begin{document}

            begin{equation}
            begin{dcases}
            left. begin{aligned}
            & eqmakebox[LHS][r]{$dfrac{mathrm{d}G(t)}{mathrm{d}t}$}
            = G_{in} - sigma_2 G - a left(c + frac{mI}{n + I} right) G + b \
            & eqmakebox[LHS][r]{$dfrac{mathrm{d}I(t)}{mathrm{d}t}$}
            = frac{sigma_1 G^2}{alpha_1^2 + G^2} - d_i I(t)
            end{aligned} right } quad t neq k_tau, \
            left. begin{aligned}
            & eqmakebox[LHS][r]{$G(t^+)$} = G(t) \
            & eqmakebox[LHS][r]{$I(t^+)$} = I(t) + sigma
            end{aligned} right } quad t = k_tau
            end{dcases}
            end{equation}

            end{document}





            share|improve this answer












            The following uses eqparbox's eqmakebox[<tag>][<align>]{<stuff>} to ensure all <stuff> with the same <tag> is set in a box of maximum width with the appropriate <align>ment. This automates the process of aligning the equation left-hand sides:



            enter image description here



            documentclass{article}

            usepackage{mathtools,eqparbox}

            begin{document}

            begin{equation}
            begin{dcases}
            left. begin{aligned}
            & eqmakebox[LHS][r]{$dfrac{mathrm{d}G(t)}{mathrm{d}t}$}
            = G_{in} - sigma_2 G - a left(c + frac{mI}{n + I} right) G + b \
            & eqmakebox[LHS][r]{$dfrac{mathrm{d}I(t)}{mathrm{d}t}$}
            = frac{sigma_1 G^2}{alpha_1^2 + G^2} - d_i I(t)
            end{aligned} right } quad t neq k_tau, \
            left. begin{aligned}
            & eqmakebox[LHS][r]{$G(t^+)$} = G(t) \
            & eqmakebox[LHS][r]{$I(t^+)$} = I(t) + sigma
            end{aligned} right } quad t = k_tau
            end{dcases}
            end{equation}

            end{document}






            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Nov 26 '18 at 18:54









            Werner

            437k649591649




            437k649591649












            • Perfect! thank you so much!
              – C.Hegg
              Nov 26 '18 at 19:07


















            • Perfect! thank you so much!
              – C.Hegg
              Nov 26 '18 at 19:07
















            Perfect! thank you so much!
            – C.Hegg
            Nov 26 '18 at 19:07




            Perfect! thank you so much!
            – C.Hegg
            Nov 26 '18 at 19:07











            2














            Here's a solution that employs nested array environments.



            enter image description here



            documentclass{article}
            usepackage{array,booktabs}
            newcolumntype{L}{>{displaystyle}l}
            begin{document}
            [
            renewcommandarraystretch{1.33}
            setlengtharraycolsep{0pt}
            left{
            begin{array}{L}
            left.
            begin{array}{L}
            a = ldfjdl;kfsja ;kfja;ksdljfa\
            b = asjfl;a ;adjfl;asj ;adjfals
            end{array}
            right}
            ,quad tne kr,. \ addlinespace
            left.
            begin{array}{L}
            c = jfdals;jkf\
            d = dsalfjasl;fja
            end{array}
            right}
            ,quad t=kr,.
            end{array}
            right.
            ]


            end{document}






            share|improve this answer


























              2














              Here's a solution that employs nested array environments.



              enter image description here



              documentclass{article}
              usepackage{array,booktabs}
              newcolumntype{L}{>{displaystyle}l}
              begin{document}
              [
              renewcommandarraystretch{1.33}
              setlengtharraycolsep{0pt}
              left{
              begin{array}{L}
              left.
              begin{array}{L}
              a = ldfjdl;kfsja ;kfja;ksdljfa\
              b = asjfl;a ;adjfl;asj ;adjfals
              end{array}
              right}
              ,quad tne kr,. \ addlinespace
              left.
              begin{array}{L}
              c = jfdals;jkf\
              d = dsalfjasl;fja
              end{array}
              right}
              ,quad t=kr,.
              end{array}
              right.
              ]


              end{document}






              share|improve this answer
























                2












                2








                2






                Here's a solution that employs nested array environments.



                enter image description here



                documentclass{article}
                usepackage{array,booktabs}
                newcolumntype{L}{>{displaystyle}l}
                begin{document}
                [
                renewcommandarraystretch{1.33}
                setlengtharraycolsep{0pt}
                left{
                begin{array}{L}
                left.
                begin{array}{L}
                a = ldfjdl;kfsja ;kfja;ksdljfa\
                b = asjfl;a ;adjfl;asj ;adjfals
                end{array}
                right}
                ,quad tne kr,. \ addlinespace
                left.
                begin{array}{L}
                c = jfdals;jkf\
                d = dsalfjasl;fja
                end{array}
                right}
                ,quad t=kr,.
                end{array}
                right.
                ]


                end{document}






                share|improve this answer












                Here's a solution that employs nested array environments.



                enter image description here



                documentclass{article}
                usepackage{array,booktabs}
                newcolumntype{L}{>{displaystyle}l}
                begin{document}
                [
                renewcommandarraystretch{1.33}
                setlengtharraycolsep{0pt}
                left{
                begin{array}{L}
                left.
                begin{array}{L}
                a = ldfjdl;kfsja ;kfja;ksdljfa\
                b = asjfl;a ;adjfl;asj ;adjfals
                end{array}
                right}
                ,quad tne kr,. \ addlinespace
                left.
                begin{array}{L}
                c = jfdals;jkf\
                d = dsalfjasl;fja
                end{array}
                right}
                ,quad t=kr,.
                end{array}
                right.
                ]


                end{document}







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 26 '18 at 18:47









                Mico

                273k30369756




                273k30369756






























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