# Inline TeX Input renders wrong characters / symbols

As you may know, you can write TeX within a cell with CTR+\$ and press RETURN to get it rendered. This is known as Inline TeX Input and can be manually done with Insert->Inline TeX Input

So, I wanted to represent something with it in a Styled Notebook and needed both \lfloor and \rfloor from TeX. I wrote them in the Inline TeX Input and hit RETURN to get them rendered, the problem is that the rendered symbols are not the correct ones.

• \lfloor shows as |> when it is supposed to render as $$\lfloor$$

• \rfloor shows as $$\lfloor$$ when it is supposed to render as $$\rfloor$$

Later that, I tried to use \lceil and \rceil but both were rendered wrong as-well

• \lceil shows as $$\rfloor$$ when it is supposed to render as $$\lceil$$

• \rceil shows as $$\lceil$$ when it is supposed to render as $$\rceil$$

Look:

1. Here I'm in the Inline TeX Input mode within a Cell with Text Format
2. When I press RETURN I get wrong symbols rendered. I expected $$\lfloor n \rfloor$$

And also look:

1. I want left and right ceil symbols
2. I hit RETURN to render the TeX input and wrong symbols are shown. I expected $$\lceil n \rceil$$

It doesn't matter what the cell format is (Code/Text/Title/etc), the font or the file type (Styled Notebook/Notebook/etc), it's always rendering wrong symbols.

I'm not a math expert tbh but I am pretty sure this is wrong TeX rendering. How can I fix it?

I already tried totally reinstalling Mathematica, problems still exists. Mathematica: 12.2.0.0 - OS: macOS Big Sur 11.2.1

• Can you provide a bit of context? Where are you writing these commands exactly? – MarcoB Feb 19 at 14:29
• @MarcoB - I improved the question. Is it more clear? – AOx0 Feb 19 at 18:19