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3

Here is a pstricks solution, as faithful as possible to the O.P.'s post. It relies on the \psDefBoxNodes command, from pst-node, which allows to consider the box defined by a text as having $10$ nodes on its contour, and $2$ inside it (at the centre of the box and at the centre of the base line), thus allowing for very precise connections. Also, I used as ...

3

One possibility to achieve this is by using the underoverlap package. To understand the following code, please also have a look at its documentation. \documentclass{article} \usepackage{amsmath} \usepackage{underoverlap} \begin{document} \[ \overbrace{ \UOLunderbrace{ \overbrace{ \boxed{1,2,3,\dots \text{ ...

6

You might consider using tikzmark. Basically, the idea is to place markers around the mathematics and to then use these markers to places the braces and labels in an overlaid tikzpicture environment. You will need to allow sufficient space for this in your document i.e. some extra space above and below the diagram so that when the braces and labels are ...

1


6

Here is a solution, based on blkarray, multirow and \bigstrut: \documentclass{book} \usepackage{amsmath, bm} \usepackage{blkarray, multirow, bigstrut} \newcommand\mystrut[1][0.6ex]{\setlength\bigstrutjot{#1}{\bigstrut[t]}} \usepackage{bm} \begin{document} \[ \bm{O}_4(2\phi) = \begin{bmatrix} \!\!\!\begin{blockarray}{c c c c} 1 & 0 & 0 & 0 ...

8

You can, with some tricks: \documentclass{article} \usepackage{amsmath} \begin{document} \[ \boldsymbol{O}_{4}(2\phi)= \begin{bmatrix} 1 & \mspace{-12mu} \begin{matrix} 0 & 0 & 0 \end{matrix} \\ \begin{matrix} 0 \\ 0 \\ 0 \end{matrix} & \mspace{-12mu} \begin{bmatrix} \vphantom{\begin{matrix} 0 \\ 0 \\ 0 \end{matrix}} ...

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