Source: Noto CJK

U+FFE9 Halfwidth Leftwards Arrow

U+FFE9 was added in Unicode version 1.1 in 1993. It belongs to the block U+FF00 to U+FFEF Halfwidth and Fullwidth Forms in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Math Symbol and is commonly used, that is, in no specific script.

The glyph is a narrow version of the glyph Leftwards Arrow. Accordingly, its width in East Asian Text is halfwidth. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+FFE9 forms with similar adjacent characters prevents a line break inside it.

The Wikipedia has the following information about this codepoint:

← or <- may refer to:

an arrow (symbol), character of Unicode

an arrow key or a backspace on a keyboard

←, <<, <-, representing the assignment operator in various programming languages

a converse implication in logic

the relative direction of left or back

"Caused by" (and other meanings), in medical notation

Representations

System	Representation
Nº	65513
UTF-8	EF BF A9
UTF-16	FF E9
UTF-32	00 00 FF E9
URL-Quoted	%EF%BF%A9
HTML hex reference	￩
Wrong windows-1252 Mojibake	ï¿©

Elsewhere

Complete Record

Property	Value
Age (age)	1.1 (1993)
Unicode Name (na)	HALFWIDTH LEFTWARDS ARROW
Unicode 1 Name (na1)	—
Block (blk)	Halfwidth and Fullwidth Forms
General Category (gc)	Math Symbol
Script (sc)	Common
Bidirectional Category (bc)	Other Neutral
Combining Class (ccc)	Not Reordered
Decomposition Type (dt)	narrow
Decomposition Mapping (dm)	Leftwards Arrow
Lowercase (Lower)	✘
Simple Lowercase Mapping (slc)	Halfwidth Leftwards Arrow
Lowercase Mapping (lc)	Halfwidth Leftwards Arrow
Uppercase (Upper)	✘
Simple Uppercase Mapping (suc)	Halfwidth Leftwards Arrow
Uppercase Mapping (uc)	Halfwidth Leftwards Arrow
Simple Titlecase Mapping (stc)	Halfwidth Leftwards Arrow
Titlecase Mapping (tc)	Halfwidth Leftwards Arrow
Case Folding (cf)	Halfwidth Leftwards Arrow
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)	Halfwidth Leftwards Arrow
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)	Leftwards Arrow
NFKC Quick Check (NFKC_QC)	No
NFKC_SCF (NFKC_SCF)	Leftwards Arrow
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)	Halfwidth Leftwards Arrow
Bidi Paired Bracket Type (bpt)	None
East Asian Width (ea)	halfwidth
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)	none
Numeric Value (nv)	not a number
Simple Case Folding (scf)	Halfwidth Leftwards Arrow
Script Extension (scx)
Vertical Orientation (vo)	R