Combining Diacritical Marks for Symbols

See also: Combining Diacritical Marks (Unicode block), Combining Diacritical Marks Supplement (Unicode block), Combining Diacritical Marks Extended (Unicode block), and Combining Half Marks (Unicode block)

For a list of all mathematical symbols encoded in Unicode, see Mathematical operators and symbols in Unicode.

Short description: Unicode character block

Combining Diacritical Marks for Symbols

Range| U+20D0..U+20FF
(48 code points)
Plane| BMP
Scripts| Inherited
Assigned| 33 code points
Unused| 15 reserved code points
Unicode version history
1.0.0| 18 (+18)
3.0| 20 (+2)
3.2| 27 (+7)
4.1| 28 (+1)
5.0| 32 (+4)
5.1| 33 (+1)
Note: [1][2]

Combining Diacritical Marks for Symbols is a Unicode block containing arrows, dots, enclosures, and overlays for modifying symbol characters.

Its block name in Unicode 1.0 was simply Diacritical Marks for Symbols.[3]

## Block

Template:Unicode chart Combining Diacritical Marks for Symbols

## History

The following Unicode-related documents record the purpose and process of defining specific characters in the Combining Diacritical Marks for Symbols block:

Version | Final code points[lower-alpha 1] | Count | L2 ID | WG2 ID | Document

|
|
|
|
|

1.0.0 | U+20D0..20E1 | 18 |  |  | (to be determined)
L2/06-181 |  | Anderson, Deborah (2006-05-08), Responses to the UTC regarding L2/06-042, Proposal for Additional Cyrillic Characters, "Please add an annotation to U+20DD saying that it can be used as the Cyrillic ten thousands sign"
L2/06-108 |  | Moore, Lisa (2006-05-25), UTC #107 Minutes, "Add an annotation to the names list for U+20DD COMBINING ENCLOSING CIRCLE."
3.0 | U+20E2..20E3 | 2 | L2/97-206 | N1668 |  Proposal to encode two symbols, 1997-08-05
L2/98-007 | N1668R (pdf) |  Joint proposal to encode two symbols, 1998-02-13
L2/98-039 |  | Aliprand, Joan; Winkler, Arnold (1998-02-24), Preliminary Minutes - UTC #74 & L2 #171, Mountain View, CA - December 5, 1997
L2/98-082 | N1668R (doc) |  Joint proposal to encode enclosing screen and keycap, 1998-03-23
L2/98-286 | N1703 | Umamaheswaran, V. S.; Ksar, Mike (1998-07-02), Unconfirmed Meeting Minutes, WG 2 Meeting #34, Redmond, WA, USA; 1998-03-16--20
L2/98-321 | N1905 |  Revised text of 10646-1/FPDAM 23, AMENDMENT 23: Bopomofo Extended and other characters, 1998-10-22
L2/99-010 | N1903 (pdf, html, doc) | Umamaheswaran, V. S. (1998-12-30), Minutes of WG 2 meeting 35, London, U.K.; 1998-09-21--25
L2/17-103 |  | Moore, Lisa (2017-05-18), UTC #151 Minutes
L2/98-070 |  | Aliprand, Joan; Winkler, Arnold, Minutes of the joint UTC and L2 meeting from the meeting in Cupertino, February 25-27, 1998
L2/99-021 | N1941 | McGowan, Rick (1998-12-07), Request for Addition of Triangular Overlay Character
L2/99-077.1 | N1975 |  Irish Comments on SC 2 N 3210, 1999-01-20
L2/98-419 (pdf, doc) |  | Aliprand, Joan (1999-02-05), Approved Minutes -- UTC #78 & NCITS Subgroup L2 # 175 Joint Meeting, San Jose, CA -- December 1-4, 1998
L2/99-176R |  | Moore, Lisa (1999-11-04), Minutes from the joint UTC/L2 meeting in Seattle, June 8-10, 1999
L2/99-232 | N2003 | Umamaheswaran, V. S. (1999-08-03), Minutes of WG 2 meeting 36, Fukuoka, Japan, 1999-03-09--15
U+20E5..20E8 | 4 | L2/00-119[lower-alpha 2] | N2191R | Whistler, Ken; Freytag, Asmus (2000-04-19), Encoding Additional Mathematical Symbols in Unicode
L2/00-234 | N2203 (rtf, txt) | Umamaheswaran, V. S. (2000-07-21), Minutes from the SC2/WG2 meeting in Beijing, 2000-03-21 -- 24
L2/00-115R2 |  | Moore, Lisa (2000-08-08), Minutes Of UTC Meeting #83
U+20E9..20EA | 2 | L2/99-010 | N1903 (pdf, html, doc) | Umamaheswaran, V. S. (1998-12-30), Minutes of WG 2 meeting 35, London, U.K.; 1998-09-21--25
L2/01-156 | N2356 | Freytag, Asmus (2001-04-03), Additional Mathematical Characters (Draft 10)
L2/01-344 | N2353 (pdf, doc) | Umamaheswaran, V. S. (2001-09-09), Minutes from SC2/WG2 meeting #40 -- Mountain View, April 2001
4.1 | U+20EB | 1 | L2/03-194 | N2590 | Freytag, Asmus (2003-06-09), Additional Mathematical and Letterlike Characters
L2/04-196 | N2653 (pdf, doc) | Umamaheswaran, V. S. (2004-06-04), Unconfirmed minutes of WG 2 meeting 44
5.0 | U+20EC..20EF | 4 | L2/04-406 |  | Freytag, Asmus; Sargent, Murray; Beeton, Barbara; Carlisle, David (2004-11-15), Progress report on Mathematical Symbols
L2/04-410 |  | Freytag, Asmus (2004-11-18), Twenty six mathematical characters
5.1 | U+20F0 | 1 | L2/07-011R | N3198R | Freytag, Asmus; Beeton, Barbara; Ion, Patrick; Sargent, Murray; Carlisle, David; Pournader, Roozbeh (2007-01-15), 29 Additional Mathematical and Symbol Characters
L2/07-015 |  | Moore, Lisa (2007-02-08), UTC #110 Minutes
L2/07-268 | N3253 (pdf, doc) | Umamaheswaran, V. S. (2007-07-26), Unconfirmed minutes of WG 2 meeting 50, Frankfurt-am-Main, Germany; 2007-04-24/27

1. ↑ Proposed code points and characters names may differ from final code points and names
2. ↑ Refer to the history section of the Miscellaneous Mathematical Symbols-B block for additional math-related documents

## References

1. ↑ "Unicode character database". The Unicode Standard. https://www.unicode.org/ucd/. Retrieved 2023-07-26.
2. ↑ "Enumerated Versions of The Unicode Standard". The Unicode Standard. https://www.unicode.org/versions/enumeratedversions.html. Retrieved 2023-07-26.
3. ↑ "3.8: Block-by-Block Charts". The Unicode Standard. Unicode Consortium. https://www.unicode.org/versions/Unicode1.0.0/CodeCharts2.pdf.

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