Missing delimiter (.inserted)

I am new to latex and am trying to create the following in latex:

It looks similar to what I want when I use this:

$\scriptsize 0_{{\big T}{\small 1}} =  However, I get the following error message: ! Missing delimiter (. inserted). <to be read again> T l.10$\scriptsize 0_{{\big T
}{\small 1}} =
I was expecting to see something like (' or \{' or
\}' here. If you typed, e.g., {' instead of \{', you
should probably delete the {' by typing 1' now, so that
braces don't get unbalanced. Otherwise just proceed.
Acceptable delimiters are characters whose \delcode is
nonnegative, or you can use \delimiter <delimiter code>'.


I am not sure how to fix the error and am hoping someone on here can help me :)

• \big does not change the font size in math mode but is used for delimiters like { or )... – leandriis Jun 5 at 14:47
• Does \documentclass{article} \begin{document} $^0T_1 =$ \end{document} give the desired output? i.stack.imgur.com/7UhO8.png – leandriis Jun 5 at 14:49
• \big must be followed by a delimiter; it doesn't change the size of arbitrary symbols. What do you need, precisely? – egreg Jun 5 at 14:49
• in addition to \Big being an error, the text size changes such as \scriptsize and \small should not be used in math mode (they give a warning and do not work as you might expect) – David Carlisle Jun 5 at 14:53
• @leandriis Yes, thank you! – Fee Jun 5 at 15:30

\documentclass{article}
$^0T_1 =$

• The drawing in the question looks more like a sans serif letter than an ordinary italic variable. Maybe {\top} would work, although I think a larger size would be better. (The braces enclosing \top are necessary to disable the usual spacing; this should be an "ordinary" character, although probably a "large operator" without limits could work.) – barbara beeton Jun 5 at 18:50