Mdthbs

I was writing an upper triangular matrix but due to large entry was unable to get in a good view.

documentclass[10pt,a4paper]{article}

usepackage[utf8]{inputenc}

usepackage{amsmath,mathtools}

usepackage{amsfonts}

usepackage{amssymb}

begin{document}

   $$ J(hat{Phi})(p)=

   begin{pmatrix*}[c]

   ((hat{Phi}(p)_{ij}))_{i,j=1}^r    &hdots &   &  &hdots   &                 ((hat{Phi}(p)_{ij}))_{i,j=1}^r                                  \

  & ddots      &     &    vdots\

         &      & ddots    & &((partial^{alpha}partial^{beta}hat{Phi}(p)_{ij}))_{i,j=1}^r  &   vdots        \

 text{huge0} &  &   &       &     \

 & & & & & ((partial_d^{k-1}hat{Phi}(p)_{ij}))_{i,j=1}^r

end{pmatrix*}

$$

end{document}

Something like this?

documentclass[10pt,a4paper]{article}

usepackage[utf8]{inputenc}

usepackage[T1]{fontenc}

usepackage{mathtools,amssymb}

begin{document}

[

setlengtharraycolsep{2.5pt} % default value: 5pt

J(widehat{Phi})(p)=

begin{pmatrix}

bigl((widehat{Phi}(p)^{}_{ij})bigr)_{i,j=1}^r &dots &dots & dots & 

       bigl((widehat{Phi}(p)^{}_{ij})bigr)_{i,j=1}^r \

& ddots & vdots & & vdots\

& &bigl((partial^{alpha}partial^{beta}widehat{Phi}(p)^{}_{ij})bigr)_{i,j=1}^r & & vdots \

 & & & ddots  & vdots \

 hbox{huge0} & & & & bigl((partial_d^{k-1}widehat{Phi}(p)^{}_{ij})bigr)_{i,j=1}^r

end{pmatrix}

]

end{document}

How about this

where

• I have usedmathrlap to hide the subscript and superscript from affecting column width so that the ddots appear below them,


• used smash on the large zero so it does not effect vertical spacing, and


• eliminated unneeded packages for this example.

Code:

documentclass{article}

usepackage{mathtools}



newcommand*{A}{((hat{Phi}(p)_{ij}))mathrlap{{}_{i,j=1}^r}}%

newcommand*{B}{((partial^{alpha}partial^{beta}hat{Phi}(p)_{ij}))mathrlap{{}_{i,j=1}^r}}%

newcommand*{C}{((partial_d^{k-1}hat{Phi}(p)_{ij}))_{i,j=1}^r}

newcommand*{BigZ}{hspace*{2.0em}smash{text{Huge0}}}



begin{document}

[ 

   J(hat{Phi})(p)=

   begin{pmatrix*}[c]

     A  &        & hdots  &  hdots & A     \

         & ddots &         &         & vdots \

         &        & B      &         & vdots \

   BigZ &        &         & ddots  & vdots \

         &        &         &         & C     \

end{pmatrix*}

]

end{document}

If you are open to loading tikz, you could do

documentclass[10pt,a4paper]{article}

usepackage[utf8]{inputenc}

usepackage{mathtools}

usepackage{tikz}

usetikzlibrary{tikzmark}

begin{document}

[ J(widehat{Phi})(p)=

   begin{pmatrix*}[c]

   tikzmarknode{tl}{((widehat{Phi}(p)_{ij}))_{i,j=1}^r}   & 

   hspace*{8em}&

    tikzmarknode{tr}{((widehat{Phi}(p)_{ij}))_{i,j=1}^r}    \[4em]

 tikzmarknode{bl}{~} &  &

 tikzmarknode{br}{((partial_d^{k-1}widehat{Phi}(p)_{ij}))_{i,j=1}^r}

end{pmatrix*}

begin{tikzpicture}[overlay,remember picture,Dotted/.style={%https://tex.stackexchange.com/a/101263/194703

 line width=#1, line cap=round, dash pattern=on 0pt off 4pgflinewidth},

 Dotted/.default=1.5pt,shorten/.style={shorten >=#1/2,shorten <=#1/2}]

 draw[Dotted,shorten=4ex]  (tl) -- (tr);

 draw[Dotted,shorten=4ex]  (tr) -- (br);

 draw[Dotted,shorten=5ex]  (tl) -- (br) node[pos=0.51,fill=white]

  {$((partial^{alpha}partial^{beta}widehat{Phi}(p)_{ij}))_{i,j=1}^r$} ;

 node[scale=3,above] at (bl.south west) {$0$};

end{tikzpicture}

]

end{document}