If you took three semesters of post-secondary maths and never encountered "∈", y... | Hacker News

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ajarmst on March 24, 2017 | parent | context | favorite | on: Why Don't Computer Scientists Learn Math? (2016)

If you took three semesters of post-secondary maths and never encountered "∈", you should ask for your money back.

marssaxman on March 24, 2017 [–]

I don't know whether I encountered it. Perhaps I just forgot. Either way, it hasn't been a notation used in real life.

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