Math Processing Error In Docs

[O957]

At present (2025-06-05), I see, on the documentation page, a math-processing error:

Details

Corresponding to the line

Calculated program length: \widehat{N} = \eta_1 \log_2 \eta_1 +
\eta_2 \log_2 \eta_2

in https://github.com/rubik/radon/blob/master/docs/intro.rst.