I try to summarize an array like this:enter image description here

and make a outline with the following style: enter image description here What is the template of this syntax? Moreover, is it possible to put a symbol(or sentence) at any certain place by coordination?

1 Answer 1


Here is something that produces an output reminiscent of your drawing. It will only be possible to determine a very good way of doing such things if you provide us with more context, i.e. the code you have tried.

 \item $\tikzmarknode{1}{N(L^*)=R(L^*)^\perp;}$
 \item $\tikzmarknode{2}{{}^\perp N(L^*)=\overline{R(L)};}$
 \item $\tikzmarknode{3}{{}^\perp  N(L)={}^\perp R(L^*);}$
 \item $\tikzmarknode{4}{{}N(L^*)=\overline{R(L^*)}^{n*};}$%
 \begin{tikzpicture}[overlay,remember picture,
    decoration={calligraphic brace,amplitude=4pt},very thick]
  \path[local bounding box=top] (1.north east)  -- (2.south east);
  \draw[decorate] ([xshift=1ex]top.north east)  -- ([xshift=1ex]top.south east)
   node[midway,right=1ex]{$L$ is densely defined};
  \path[local bounding box=bot] (3.north east)  -- (4.south east);
  \draw[decorate] ([xshift=1ex]bot.north east)  -- ([xshift=1ex]bot.south east)
   node[midway,right=1ex]{$L$ is closed graph};
 \text{function}&\colon \mathbb{F}\to\mathbb{F}\\[1em]
 \text{functional}&\colon C(\mathbb{F})\to\mathbb{F}\\[1em]
 \text{operator}&\colon C(\mathbb{F})\to C(\mathbb{F})

enter image description here

  • Sorry, I hadn’t tried it yet. The only method I considered is add it manually by annotation, which is quite awkward. By the way can you add the code for my last question? Thank you very much.
    – Varnothing
    Mar 14, 2020 at 3:37

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