First off, your questions use the existing formatting tools expertly; they all seem to clearly describe the problem at hand. I can certainly picture how LaTeX would allow more mathematical explanations and nicer-looking matrices. However, I think MathJax is overkill for this site.

For one thing, it wouldn't be used much in answers.* Afterall, code golf answers are typically written in code, not mathematical notation. Contrast that to Puzzling where good answers might need to bring math into play even when the question shows no obvious indication it might be required.

While mathematics is the lingua franca of algorithms, among programmers pseudocode tends to be more commonly used. So it feels like MathJax is a poor fit for this topic. Are there algorithms that are difficult or impossible to express in pseudocode?

* I did see this fine answer as the exception that proves the rule.

First off, your questions use the existing formatting tools expertly; they all seem to clearly describe the problem at hand. I can certainly picture how LaTeX would allow more mathematical explanations and nicer-looking matrices. However, I think MathJax is overkill for this site.

For one thing, it wouldn't be used much in answers.* Afterall, code golf answers are typically written in code, not mathematical notation. Contrast that to Puzzling where good answers might need to bring math into play even when the question shows no obvious indication it might be required.

While mathematics is the lingua franca of algorithms, among programmers pseudocode tends to be more commonly used. So it feels like MathJax is a poor fit for this topic. Are there algorithms that are difficult or impossible to express in pseudocode?

* I did see this fine answer as the exception that proves the rule.