U+00B9 was added to Unicode in version 1.1 (1993). It belongs to the block Latin-1 Supplement in the Basic Multilingual Plane.

This character is a Other Number and is commonly used, that is, in no specific script. The codepoint has the Digit value 1.

The glyph is a Super composition of the glyphs 1. It has a Ambiguous East Asian Width. In bidirectional context it acts as European Number and is not mirrored. In text U+00B9 behaves as Ambiguous regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

Unicode has subscripted and superscripted versions of a number of characters including a full set of arabic numerals. These characters allow any polynomial, chemical and certain other equations to be represented in plain text without using any form of markup like HTML or TeX.

The World Wide Web Consortium and the Unicode Consortium have made recommendations on the choice between using markup and using superscript and subscript characters: "When used in mathematical context (MathML) it is recommended to consistently use style markup for superscripts and subscripts...However, when super and sub-scripts are to reflect semantic distinctions, it is easier to work with these meanings encoded in text rather than markup, for example, in phonetic or phonemic transcription."


System Representation
UTF-8 C2 B9
UTF-16 00 B9
UTF-32 00 00 00 B9
URL-Quoted %C2%B9
HTML-Escape ¹
Wrong windows-1252 Mojibake ¹
HTML-Escape ¹
digraph 1S
LaTeX {^1}
Encoding: EUC-KR (hex bytes) A9 F6
Encoding: ISO-8859-13 (hex bytes) B9
Encoding: ISO-8859-15 (hex bytes) B9
Encoding: ISO-8859-8 (hex bytes) B9
Encoding: WINDOWS-1252 (hex bytes) B9
Encoding: WINDOWS-1254 (hex bytes) B9
Encoding: WINDOWS-1255 (hex bytes) B9
Encoding: WINDOWS-1256 (hex bytes) B9
Encoding: WINDOWS-1257 (hex bytes) B9
Encoding: WINDOWS-1258 (hex bytes) B9


Complete Record

Property Value
Age (age) 1.1
Unicode Name (na) SUPERSCRIPT ONE
Unicode 1 Name (na1) SUPERSCRIPT DIGIT ONE
Block (blk) Latin_1_Sup
General Category (gc) Other Number
Script (sc) Common
Bidirectional Category (bc) European Number
Combining Class (ccc) Not Reordered
Decomposition Type (dt) Super
Decomposition Mapping (dm) 1
Lowercase (Lower)
Simple Lowercase Mapping (slc) ¹
Lowercase Mapping (lc) ¹
Uppercase (Upper)
Simple Uppercase Mapping (suc) ¹
Uppercase Mapping (uc) ¹
Simple Titlecase Mapping (stc) ¹
Titlecase Mapping (tc) ¹
Case Folding (cf) ¹
ASCII Hex Digit (AHex)
Alphabetic (Alpha)
Bidi Control (Bidi_C)
Bidi Mirrored (Bidi_M)
Bidi Paired Bracket (bpb) ¹
Bidi Paired Bracket Type (bpt) None
Cased (Cased)
Composition Exclusion (CE)
Case Ignorable (CI)
Full Composition Exclusion (Comp_Ex)
Changes When Casefolded (CWCF)
Changes When Casemapped (CWCM)
Changes When NFKC Casefolded (CWKCF)
Changes When Lowercased (CWL)
Changes When Titlecased (CWT)
Changes When Uppercased (CWU)
Dash (Dash)
Deprecated (Dep)
Default Ignorable Code Point (DI)
Diacritic (Dia)
East Asian Width (ea) Ambiguous
Extender (Ext)
FC NFKC Closure (FC_NFKC) ¹
Grapheme Cluster Break (GCB) Any
Grapheme Base (Gr_Base)
Grapheme Extend (Gr_Ext)
Hex Digit (Hex)
Hangul Syllable Type (hst) Not Applicable
Hyphen (Hyphen)
ID Continue (IDC)
Ideographic (Ideo)
ID Start (IDS)
IDS Binary Operator (IDSB)
IDS Trinary Operator and (IDST)
Indic Positional Category (InPC) NA
Indic Syllabic Category (InSC) Other
ISO 10646 Comment (isc)
Joining Group (jg) No_Joining_Group
Join Control (Join_C)
Jamo Short Name (JSN)
Joining Type (jt) Non Joining
Line Break (lb) Ambiguous
Logical Order Exception (LOE)
Math (Math)
Noncharacter Code Point (NChar)
NFC Quick Check (NFC_QC) Yes
NFD Quick Check (NFD_QC) Yes
NFKC Casefold (NFKC_CF) 1
NFKC Quick Check (NFKC_QC) No
NFKD Quick Check (NFKD_QC) No
Numeric Type (nt) Digit
Numeric Value (nv) 1
Other Alphabetic (OAlpha)
Other Default Ignorable Code Point (ODI)
Other Grapheme Extend (OGr_Ext)
Other ID Continue (OIDC)
Other ID Start (OIDS)
Other Lowercase (OLower)
Other Math (OMath)
Other Uppercase (OUpper)
Pattern Syntax (Pat_Syn)
Pattern White Space (Pat_WS)
Quotation Mark (QMark)
Radical (Radical)
Sentence Break (SB) Other
Simple Case Folding (scf) ¹
Script Extension (scx) Common
Soft Dotted (SD)
STerm (STerm)
Terminal Punctuation (Term)
Unified Ideograph (UIdeo)
Variation Selector (VS)
Word Break (WB) Other
White Space (WSpace)
XID Continue (XIDC)
XID Start (XIDS)
Expands On NFC (XO_NFC)
Expands On NFD (XO_NFD)
Expands On NFKC (XO_NFKC)
Expands On NFKD (XO_NFKD)