Source: Noto Sans

U+2158 Vulgar Fraction Four Fifths

U+2158 was added in Unicode version 1.1 in 1993. It belongs to the block U+2150 to U+218F Number Forms in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Other Number and is commonly used, that is, in no specific script. The codepoint has the numeric value 4/5.

The glyph is a fraction composition of the glyphs Digit Four, Fraction Slash, Digit Five. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+2158 forms with similar adjacent characters prevents a line break inside it.

The Wikipedia has the following information about this codepoint:

4/5 or 4⁄5 may refer to:

April 4 (month-day date notation)

4 May (day-month date notation)

Representations

System	Representation
Nº	8536
UTF-8	E2 85 98
UTF-16	21 58
UTF-32	00 00 21 58
URL-Quoted	%E2%85%98
HTML hex reference	⅘
Wrong windows-1252 Mojibake	â…˜
HTML named entity	&frac45;
L^AT_EX	\textfrac{4}{5}
digraph	45

Elsewhere

Complete Record

Property	Value
Age (age)	1.1 (1993)
Unicode Name (na)	VULGAR FRACTION FOUR FIFTHS
Unicode 1 Name (na1)	FRACTION FOUR FIFTHS
Block (blk)	Number Forms
General Category (gc)	Other Number
Script (sc)	Common
Bidirectional Category (bc)	Other Neutral
Combining Class (ccc)	Not Reordered
Decomposition Type (dt)	fraction
Decomposition Mapping (dm)	Digit Four Fraction Slash Digit Five
Lowercase (Lower)	✘
Simple Lowercase Mapping (slc)	Vulgar Fraction Four Fifths
Lowercase Mapping (lc)	Vulgar Fraction Four Fifths
Uppercase (Upper)	✘
Simple Uppercase Mapping (suc)	Vulgar Fraction Four Fifths
Uppercase Mapping (uc)	Vulgar Fraction Four Fifths
Simple Titlecase Mapping (stc)	Vulgar Fraction Four Fifths
Titlecase Mapping (tc)	Vulgar Fraction Four Fifths
Case Folding (cf)	Vulgar Fraction Four Fifths
ASCII Hex Digit (AHex)	✘
Alphabetic (Alpha)	✘
Bidi Control (Bidi_C)	✘
Bidi Mirrored (Bidi_M)	✘
Composition Exclusion (CE)	✘
Case Ignorable (CI)	✘
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)	✘
Cased (Cased)	✘
Full Composition Exclusion (Comp_Ex)	✘
Default Ignorable Code Point (DI)	✘
Dash (Dash)	✘
Deprecated (Dep)	✘
Diacritic (Dia)	✘
Emoji Modifier Base (EBase)	✘
Emoji Component (EComp)	✘
Emoji Modifier (EMod)	✘
Emoji Presentation (EPres)	✘
Emoji (Emoji)	✘
Extender (Ext)	✘
Extended Pictographic (ExtPict)	✘
FC NFKC Closure (FC_NFKC)	Vulgar Fraction Four Fifths
Grapheme Cluster Break (GCB)	Any
Grapheme Base (Gr_Base)	✔
Grapheme Extend (Gr_Ext)	✘
Grapheme Link (Gr_Link)	✘
Hex Digit (Hex)	✘
Hyphen (Hyphen)	✘
ID Continue (IDC)	✘
ID Start (IDS)	✘
IDS Binary Operator (IDSB)	✘
IDS Trinary Operator and (IDST)	✘
IDSU (IDSU)	0
ID_Compat_Math_Continue (ID_Compat_Math_Continue)	0
ID_Compat_Math_Start (ID_Compat_Math_Start)	0
Ideographic (Ideo)	✘
InCB (InCB)	None
Indic Mantra Category (InMC)	—
Indic Positional Category (InPC)	NA
Indic Syllabic Category (InSC)	Other
Jamo Short Name (JSN)	—
Join Control (Join_C)	✘
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)	Digit Four Fraction Slash Digit Five
NFKC Quick Check (NFKC_QC)	No
NFKC_SCF (NFKC_SCF)	Digit Four Fraction Slash Digit Five
NFKD Quick Check (NFKD_QC)	No
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)	✘
Prepended Concatenation Mark (PCM)	✘
Pattern Syntax (Pat_Syn)	✘
Pattern White Space (Pat_WS)	✘
Quotation Mark (QMark)	✘
Regional Indicator (RI)	✘
Radical (Radical)	✘
Sentence Break (SB)	Other
Soft Dotted (SD)	✘
Sentence Terminal (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)	✔
Bidi Paired Bracket (bpb)	Vulgar Fraction Four Fifths
Bidi Paired Bracket Type (bpt)	None
East Asian Width (ea)	neutral
Hangul Syllable Type (hst)	Not Applicable
ISO 10646 Comment (isc)	—
Joining Group (jg)	No_Joining_Group
Joining Type (jt)	Non Joining
Line Break (lb)	Alphabetic
Numeric Type (nt)	numeric
Numeric Value (nv)	4/5
Simple Case Folding (scf)	Vulgar Fraction Four Fifths
Script Extension (scx)
Vertical Orientation (vo)	U