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Why does the `i` after `h_` need a curly but not after `\sum_`? A pity that HN can't render TeX or MathJax or whatever.
by zombot 3mo ago
Why does the `i` after `h_` need a curly but not after `\sum_`?
A pity that HN can't render TeX or MathJax or whatever.
- tempfile 3mo agoIt doesn't. The rule for TeX is that single-character tokens don't need braces. I assume this is just an artefact of their particular muscle memory. You can test it here, if you like: https://www.mathjax.org/#demo https://www.mathjax.org/#demo