Writing bit difficult equation in latex












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I am new to latex. I know how to write basic equation latex. However, the following equation seems very difficult for me. Please help me with this. Thank you



enter image description here










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    1















    I am new to latex. I know how to write basic equation latex. However, the following equation seems very difficult for me. Please help me with this. Thank you



    enter image description here










    share|improve this question









    New contributor




    Nahid Hossain is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























      1












      1








      1








      I am new to latex. I know how to write basic equation latex. However, the following equation seems very difficult for me. Please help me with this. Thank you



      enter image description here










      share|improve this question









      New contributor




      Nahid Hossain is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      I am new to latex. I know how to write basic equation latex. However, the following equation seems very difficult for me. Please help me with this. Thank you



      enter image description here







      math-mode equations






      share|improve this question









      New contributor




      Nahid Hossain is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question









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      share|improve this question




      share|improve this question








      edited 22 mins ago









      JouleV

      7,48221952




      7,48221952






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      asked 35 mins ago









      Nahid HossainNahid Hossain

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          2 Answers
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          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}


          enter image description here





          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



          documentclass{article}
          usepackage{amsmath}
          newcommand{lev}{mathrm{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}


          enter image description here






          share|improve this answer

































            1














            enter image description here



            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}





            share|improve this answer























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              2 Answers
              2






              active

              oldest

              votes








              2 Answers
              2






              active

              oldest

              votes









              active

              oldest

              votes






              active

              oldest

              votes









              2














              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}


              enter image description here





              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



              documentclass{article}
              usepackage{amsmath}
              newcommand{lev}{mathrm{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}


              enter image description here






              share|improve this answer






























                2














                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}


                enter image description here





                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



                documentclass{article}
                usepackage{amsmath}
                newcommand{lev}{mathrm{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}


                enter image description here






                share|improve this answer




























                  2












                  2








                  2







                  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}


                  enter image description here





                  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



                  documentclass{article}
                  usepackage{amsmath}
                  newcommand{lev}{mathrm{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}


                  enter image description here






                  share|improve this answer















                  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}


                  enter image description here





                  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



                  documentclass{article}
                  usepackage{amsmath}
                  newcommand{lev}{mathrm{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}


                  enter image description here







                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited 18 mins ago

























                  answered 26 mins ago









                  JouleVJouleV

                  7,48221952




                  7,48221952























                      1














                      enter image description here



                      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}





                      share|improve this answer




























                        1














                        enter image description here



                        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}





                        share|improve this answer


























                          1












                          1








                          1







                          enter image description here



                          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}





                          share|improve this answer













                          enter image description here



                          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}






                          share|improve this answer












                          share|improve this answer



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                          answered 18 mins ago









                          Al-Motasem AldaoudeyehAl-Motasem Aldaoudeyeh

                          1,822414




                          1,822414






















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