上標和下標
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上標和下標是一個位於基本多文種平面的Unicode區塊,包含了上標和下標數字、數學運算符以及數學和語音學中使用的字母。使用本區塊中的下標和上標可以使任何多項式、化學方程式和某些其他方程式在純文本中得到表示,而不需要使用任何形式的標記語言,如HTML或TeX。其他的上標字母可以在佔位修飾符號、音標擴展和音標擴展補充區塊中找到,而自ISO 8859-1繼承而來的上標數字1、2和3則位於拉丁字母補充-1區塊中。
上標和下標 Superscripts and Subscripts | |
---|---|
範圍 | U+2070..U+209F (48個碼位) |
平面 | 基本多文種平面(BMP) |
文字 | 拉丁字母(15個) 通用(27個) |
已分配 | 42個碼位 |
未分配 | 6個保留碼位 |
統一碼版本歷史 | |
1.0.0 | 28 (+28) |
3.2 | 29 (+1) |
4.1 | 34 (+5) |
6.0 | 42 (+8) |
碼表 | |
點擊此處 | |
註釋:[1][2] |
區塊
上標和下標 Superscripts and Subscripts[1][2][3] Unicode Consortium 官方碼表(PDF) | ||||||||||||||||
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F | |
U+207x | ⁰ | ⁱ | ⁴ | ⁵ | ⁶ | ⁷ | ⁸ | ⁹ | ⁺ | ⁻ | ⁼ | ⁽ | ⁾ | ⁿ | ||
U+208x | ₀ | ₁ | ₂ | ₃ | ₄ | ₅ | ₆ | ₇ | ₈ | ₉ | ₊ | ₋ | ₌ | ₍ | ₎ | |
U+209x | ₐ | ₑ | ₒ | ₓ | ₔ | ₕ | ₖ | ₗ | ₘ | ₙ | ₚ | ₛ | ₜ | |||
註釋 |
歷史
以下Unicode文檔記錄了定義本區塊中特定字符的目的與過程:
版本 | 最終碼位[a] | 碼位数 | L2 ID | WG2 ID | 文檔 |
---|---|---|---|---|---|
1.0.0 | U+2070, 2074..208E | 28 | (待考) | ||
L2/09-003R | Moore, Lisa, General Category Change (B.14.5), UTC #118 / L2 #215 Minutes, 2009-02-12 | ||||
3.2 | U+2071 | 1 | L2/00-159 | da Cruz, Frank, Supplemental Terminal Graphics for Unicode, 2000-03-31 | |
L2/00-115R2 | Moore, Lisa, Motion 83-M24, Minutes Of UTC Meeting #83, 2000-08-08 | ||||
L2/00-329 | N2265 (页面存档备份,存于互联网档案馆) | Whistler, Ken, Proposal for Terminal Graphic Symbols in the BMP, 2000-09-19 | |||
L2/01-050 | N2253 (页面存档备份,存于互联网档案馆) | Umamaheswaran, V. S., Resolution M39.20 (Terminal Graphic Symbols), Minutes of the SC2/WG2 meeting in Athens, September 2000, 2001-01-21 | |||
L2/09-003R | Moore, Lisa, General Category Change (B.14.5), UTC #118 / L2 #215 Minutes, 2009-02-12 | ||||
4.1 | U+2090..2094 | 5 | L2/04-077 | N2705 (页面存档备份,存于互联网档案馆) | Anderson, Deborah; Everson, Michael, Proposal to encode five Indo-Europeanist phonetic characters in the UCS, 2004-02-02 |
L2/04-191 | N2788 (页面存档备份,存于互联网档案馆) | Anderson, Deborah; Everson, Michael, Proposal to encode six Indo-Europeanist phonetic characters in the UCS, 2004-06-07 | |||
L2/04-156R2 | Moore, Lisa, Indo-European laryngeals (A.16), UTC #99 Minutes, 2004-08-13 | ||||
6.0 | U+2095..209C | 8 | L2/09-028 | N3571 (页面存档备份,存于互联网档案馆) | Ruppel, Klaas; Aalto, Tero; Everson, Michael, Proposal to encode additional characters for the Uralic Phonetic Alphabet, 2009-01-27 |
L2/09-195 | Iancu, Laurențiu, Proposal to reallocate eight phonetic subscripts, 2009-05-04 | ||||
L2/09-104 | Moore, Lisa, Consensus 119-C28, UTC #119 / L2 #216 Minutes, 2009-05-20 | ||||
L2/09-304 | Anderson, Deborah, T.4, US Position on PDAM 8, 2009-08-15 | ||||
L2/09-225R | Moore, Lisa, B.1.4.4.2, UTC #120 / L2 #217 Minutes, 2009-08-17 | ||||
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另見
參考資料
- ^ Unicode character database. The Unicode Standard. [2016-07-09]. (原始内容存档于2017-09-25).
- ^ Enumerated Versions of The Unicode Standard. The Unicode Standard. [2016-07-09]. (原始内容存档于2016-06-29).