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Glyph for U+21AE
Source: Noto Sans Math

U+21AE Left Right Arrow with Stroke

U+21AE was added in Unicode version 1.1 in 1993. It belongs to the block U+2190 to U+21FF Arrows 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 canonical composition of the glyphs Glyph for U+2194 Left Right Arrow, Glyph for U+0338 Combining Long Solidus Overlay. 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+21AE forms with similar adjacent characters prevents a line break inside it.

The CLDR project calls this character “left right arrow stroke” for use in screen reading software.

The Wikipedia has the following information about this codepoint:

Exclusive or, exclusive disjunction, exclusive alternation, logical non-equivalence, or logical inequality is a logical operator whose negation is the logical biconditional. With two inputs, XOR is true if and only if the inputs differ (one is true, one is false). With multiple inputs, XOR is true if and only if the number of true inputs is odd.

It gains the name "exclusive or" because the meaning of "or" is ambiguous when both operands are true. XOR excludes that case. Some informal ways of describing XOR are "one or the other but not both", "either one or the other", and "A or B, but not A and B".

It is symbolized by the prefix operator J: 16  and by the infix operators XOR (, , or ), EOR, EXOR, ˙, ¯, _, , , , and .

Representations

System Representation
8622
UTF-8 E2 86 AE
UTF-16 21 AE
UTF-32 00 00 21 AE
URL-Quoted %E2%86%AE
HTML hex reference ↮
Wrong windows-1252 Mojibake ↮
HTML named entity ↮
HTML named entity ↮
LATEX \nleftrightarrow

Elsewhere

Complete Record

Property Value
Age (age) 1.1 (1993)
Unicode Name (na) LEFT RIGHT ARROW WITH STROKE
Unicode 1 Name (na1)
Block (blk) Arrows
General Category (gc) Math Symbol
Script (sc) Common
Bidirectional Category (bc) Other Neutral
Combining Class (ccc) Not Reordered
Decomposition Type (dt) canonical
Decomposition Mapping (dm) Glyph for U+2194 Left Right Arrow Glyph for U+0338 Combining Long Solidus Overlay
Lowercase (Lower)
Simple Lowercase Mapping (slc) Glyph for U+21AE Left Right Arrow with Stroke
Lowercase Mapping (lc) Glyph for U+21AE Left Right Arrow with Stroke
Uppercase (Upper)
Simple Uppercase Mapping (suc) Glyph for U+21AE Left Right Arrow with Stroke
Uppercase Mapping (uc) Glyph for U+21AE Left Right Arrow with Stroke
Simple Titlecase Mapping (stc) Glyph for U+21AE Left Right Arrow with Stroke
Titlecase Mapping (tc) Glyph for U+21AE Left Right Arrow with Stroke
Case Folding (cf) Glyph for U+21AE Left Right Arrow with Stroke
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) Glyph for U+21AE Left Right Arrow with Stroke
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) No
NFKC Casefold (NFKC_CF) Glyph for U+21AE Left Right Arrow with Stroke
NFKC Quick Check (NFKC_QC) Yes
NFKC_SCF (NFKC_SCF) Glyph for U+21AE Left Right Arrow with Stroke
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) Glyph for U+21AE Left Right Arrow with Stroke
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) none
Numeric Value (nv) not a number
Simple Case Folding (scf) Glyph for U+21AE Left Right Arrow with Stroke
Script Extension (scx)
Vertical Orientation (vo) R