4 ms·

Does someone have a link to the notation to decipher this?

• monochromatic 10y ago
  https://en.wikipedia.org/wiki/Summation#Capital-sigma_notation https://en.wikipedia.org/wiki/Summation#Capital-sigma_notati...
• widdma 10y ago
  Which particular notation? Maybe Factorial [0] and Summation [1]? [0] https://en.wikipedia.org/wiki/Factorial https://en.wikipedia.org/wiki/Factorial [1] https://en.wikipedia.org/wiki/Summation https://en.wikipedia.org/wiki/Summation
  • dfabulich 10y ago
    Are the big braces in the second equation just supposed to be parentheses?
    • zodiac 10y ago
      Yeah
    • Someone 10y ago
      As zodiac said: yes. I think the printer knew he needed large parentheses, but didn't have them available (or he had used all of them elsewhere in this edition of this journal), so he went for something similar that he had instead. Knuth's rationale for writing TeX is full of this kind of observations on mathematical typesetting: letters that become larger in some places, italics that disappear, tiny font changes, etc.
• jeffcoat 10y ago
  You'll also need to know that e^x = sum{0 -> infinity} x^n / n!.