# “\label” in the math block and "\ref" in the content at the same time cause error

### Steps to reproduce

1. Use “\label{example}” in math equation block to label an equation.
2. And then I can use “$\ref{example}$” as inline math in content, which can make a cross reference in Typora.

### Expected result

I know that the support of “label” and “ref” may be a feature that Obsidian hasn’t had yet, but I’d like to see the equation show up even if the \ref is invalid.

### Actual result

But when I open the md file in Obsidian, the math block can not show up in the Preview, with an error, “Label ‘example’ multiply defined”.

### Environment

• Operating system: Window 10
• Obsidian version: 0.7.6

We won’t support equation numbering due to different ways in which Mathjax and Obsidian work. I suggest to leave out or comment the \label in the equations.