Math Symbol Frequencies

2 comments

• layer8 3 hours ago
  It seems weird that ∋ would be the sixth-most frequent symbol, while ∈ doesn't figure at all.
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  • mkl 2 hours ago
    Agreed. Even stranger to me is @ as the fourth most common operator, supposedly more common than +. The whole thing seems dubious.
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    • layer8 2 hours ago
      I would suspect that the @ comes from author email addresses. It's not entirely wrong to call that an operator. ;)
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      • mmooss 1 hour ago
        Do papers tend to have more email addresses or more plus signs? I'd expect the latter, by a lot.
• VonTum 3 hours ago
  I had a bit of a chuckle that apparently 5 out of 50000 opening "(" parentheses weren't closed, but then I saw that 2 out of 12000 "]" brackets weren't opened! What criminal is using these standalone?
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  • gfaure 2 hours ago
    There is the normal notation for half-open ranges, which would lead to unbalanced brackets.
  • rphln 3 hours ago
    Mixing them should be relatively common when denoting intervals, as in "(a, b]" or "[a, b)", so that'd be one cause for being unbalanced. But even so, the math on their usage still doesn't add up.
  • orlp 2 hours ago
    You won't like bra-ket notation then :)