See also: ſ [U+017F LATIN SMALL LETTER LONG S] and ʃ [U+0283 LATIN SMALL LETTER ESH]
U+222B, ∫
(LaTeX: \int)
INTEGRAL

[U+222A]
Mathematical Operators
[U+222C]
U+2320, ⌠
TOP HALF INTEGRAL

[U+231F]
Miscellaneous Technical
[U+2321]
U+2321, ⌡
BOTTOM HALF INTEGRAL

[U+2320]
Miscellaneous Technical
[U+2322]

Translingual

Etymology

Gottfried Leibniz based the symbol on the Latin word summa (sum), which he wrote ſumma (with a long s 'ſ' ). This use first appeared publicly in his paper De Geometria, published in Acta Eruditorum of June, 1686,[1] but he had been using it in private manuscripts since at least 1675.[2]

Symbol

  1. (mathematics) Denotes the integral

References

  1. Mathematics and its History, John Stillwell, Springer 1989, p. 110
  2. Early Mathematical Manuscripts of Leibniz, J. M. Child, Open Court Publishing Co., 1920, pp. 73–74, 80.
This article is issued from Wiktionary. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.