Glyph for U+2228 Source: Noto Sans Math
U+2228 Logical Or
U+2228 was added in Unicode version 1.1 in 1993. It belongs to the block U+2200 to U+22FF Mathematical Operators 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 character is also known as vee and disjunction .
The glyph is not a composition . Its width in East Asian texts is determined by its context . It can be displayed wide or narrow. In bidirectional text it acts as Other Neutral . When changing direction it is not mirrored . If its East Asian Width is “narrow”, U+2228 forms a word with similar characters, which prevents a line break inside it. Otherwise it allows line breaks around it, except in some numeric contexts. The glyph can be confused with one other glyph .
The Wikipedia has the following information about this codepoint:
The descending wedge symbol ∨ may represent:
Logical disjunction in propositional logic
Join in lattice theory
The wedge sum in topology
The V sign, a symbol representing peace among other things The vertically reflected symbol, ∧, is a wedge, and often denotes related or dual operators.
The ∨ symbol was introduced by Russell and Whitehead in Principia Mathematica , where they called it the Logical Sum or Disjunctive Function .
In Unicode the symbol is encoded U+2228 ∨ LOGICAL OR (∨, ∨ ). In TeX, it is vee or lor.
One motivation and the most probable explanation for the choice of the symbol ∨ is the latin word "vel" meaning "or" in the inclusive sense. Several authors use "vel" as name of the "or" function.
Representations
System
Representation
Nº
8744
UTF-8
E2 88 A8
UTF-16
22 28
UTF-32
00 00 22 28
URL-Quoted
%E2%88%A8
HTML hex reference
∨
Wrong windows-1252 Mojibake
∨
HTML named entity
∨
HTML named entity
∨
alias
vee
alias
disjunction
Encoding: EUC-KR (hex bytes)
A1 FD
Encoding: JIS0208 (hex bytes)
A2 CB
LA TE X \vee
Adobe Glyph List
logicalor
digraph
OR
Related Characters
Confusables
Complete Record
Property
Value
Age (age)
1.1 (1993)
Unicode Name (na)
LOGICAL OR
Unicode 1 Name (na1)
—
Block (blk)
Mathematical Operators
General Category (gc)
Math Symbol
Script (sc)
Common
Bidirectional Category (bc)
Other Neutral
Combining Class (ccc)
Not Reordered
Decomposition Type (dt)
none
Decomposition Mapping (dm)
Glyph for U+2228 Logical Or
Lowercase (Lower)
✘
Simple Lowercase Mapping (slc)
Glyph for U+2228 Logical Or
Lowercase Mapping (lc)
Glyph for U+2228 Logical Or
Uppercase (Upper)
✘
Simple Uppercase Mapping (suc)
Glyph for U+2228 Logical Or
Uppercase Mapping (uc)
Glyph for U+2228 Logical Or
Simple Titlecase Mapping (stc)
Glyph for U+2228 Logical Or
Titlecase Mapping (tc)
Glyph for U+2228 Logical Or
Case Folding (cf)
Glyph for U+2228 Logical Or
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+2228 Logical Or
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)
Glyph for U+2228 Logical Or
NFKC Quick Check (NFKC_QC)
Yes
NFKC_SCF (NFKC_SCF)
Glyph for U+2228 Logical Or
NFKD Quick Check (NFKD_QC)
Yes
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+2228 Logical Or
Bidi Paired Bracket Type (bpt)
None
East Asian Width (ea)
ambiguous
Hangul Syllable Type (hst)
Not Applicable
ISO 10646 Comment (isc)
—
Joining Group (jg)
No_Joining_Group
Joining Type (jt)
Non Joining
Line Break (lb)
Ambiguous (Alphabetic or Ideographic)
Numeric Type (nt)
none
Numeric Value (nv)
not a number
Simple Case Folding (scf)
Glyph for U+2228 Logical Or
Script Extension (scx)
Vertical Orientation (vo)
R