mathSymbols top-level property
Math-mode symbol commands: coreMathSymbols, then unicode-math's names (unicodeMathSymbols) and other packages' (packageSymbols) for names the core does not have.
Implementation
final Map<String, SymbolInfo> mathSymbols = {
...coreMathSymbols,
for (final table in [unicodeMathSymbols, packageSymbols])
for (final MapEntry(:key, :value) in table.entries)
if (!coreMathSymbols.containsKey(key)) key: value,
};