texlive-interval Subpackage of texlive

When typing an open interval as $]a,b[$, a closing bracket is being used in place of an opening fence and vice versa. This leads to the wrong spacing in, say, $]-a,b[$ or $A\in]a,b[=B$. The package attempts to solve this using: \interval{a}{b} -> [a,b] \interval[open]{a}{b} -> ]a,b[ \interval[open left]{a}{b} -> ]a,b] The package also supports fence scaling and ensures that the enclosing fences will end up having the proper closing and opening types. TeX maths does not do this job properly.

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