My Jacobian matrix evaluated at the equilibrium is denoted by J_E
. I typed for its trace as
tr\textit{J_E}
.
And the result is very strange. tr
appears good but \textit{J_E}
part is unlimitedly repeated with its size gradually decreasing.
It looks something like:
where the J_E
part is gradually getting smaller.
What is happening here?
Best Answer
Why should you type
\textit{J_E}
? This is wrong for several reasons._
requires math mode and the argument to\textit
is typeset in text mode (as the command name suggests).\textit
is the wrong command for typesetting a math variable: math mode should be used.You're right that “tr” for the trace should be in upright type, but typesetting a formula not in math mode just for this is misusing the tool.
Now, why the four repetitions? You first of all get an error message that says
(the line number can be different, of course). After this the output is unpredictable, because when TeX discovers the error it's too late for doing a sensible fix.