Global updates

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Alex
2022-02-04 17:51:21 +05:00
parent c6e76c56f2
commit 2b89813a32
15462 changed files with 2150532 additions and 2015765 deletions

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In logics this arrow means that the expressions to the right and to the left from it are equal. The same purpose is served by this sign: [U:2261].
In mathematics it's a relation, for instance, divisibility, equation, similarity, and perpendicularity.
In chemistry there is a theory of resonance where this sign is also used to signify a shift from one molecule structure to another.