Dear lyx developers and users

I am new to lyx. Before using lyx, I always use Mathtype software to typeset equations which can be downloaded from www.dessci.com/en/products/mathtype/ 
The equations in mathtype can be copied as latex format.
for example, an _expression_ looks like this
https://pasteboard.co/HpwLYea.png
is copied as latex code as below

\left( {\begin{array}{*{20}{c}}
{{e^{ - i\phi /2}}}\\
{{e^{i\phi /2}}}
\end{array}} \right)

I then paste this latex code into lyx math mode, however, it shows like this
https://pasteboard.co/HpwKWg4.png
with annoying redundant { and } symbol

However, if you tried any online latex equation editors like
https://www.codecogs.com
https://arachnoid.com/latex/
etc.
You will find the latex code copied from mathtype is perfect with any redundant { }

So I think the latex equation interpretation in lyx should be improved. This issue should be solved. Thank you very much! looking forward to your reply.

best regards





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