The symbol equivalent to tex command \nrightarrow is not compiling.

[Jean-Marc Lasgouttes]

[sorry people for the repost, I have to send this from a different 
address so that it gets through]

Le 14/07/2023 à 15:12, Akhilesh Singh a écrit :
> At present I am using  LyX-2.3.7 for writing a book for Statistics, 
> wherein I need to use the math symbol equivalent to tex command 
> \nrightarrow. For example, I need to state the negative form of x -> o. 
> In the display screen of LyX the required symbol appears correctly, but 
> during pdf compilation (all forms provided into LyX), does not convert 
> the symbol, and nothing is printed in the pdf.

Hello,

Normally this symbol is provided by the amssymb.sty package and the msb 
math font.

Could you first check in Document Settings>Math Options, the package 
amssymb is set to load automatically?

If this does not help, could you send the exact message that you get?
An short example file to trigger the issue would be very useful too.

JMarc