Source: Noto Sans Math

U+20DC Combining Four Dots Above

U+20DC was added in Unicode version 1.1 in 1993. It belongs to the block U+20D0 to U+20FF Combining Diacritical Marks for Symbols in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Nonspacing Mark and inherits its script property from the preceding character. The character is also known as fourth derivative.

The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Nonspacing Mark. When changing direction it is not mirrored. U+20DC prohibits a line break before it.

Representations

System	Representation
Nº	8412
UTF-8	E2 83 9C
UTF-16	20 DC
UTF-32	00 00 20 DC
URL-Quoted	%E2%83%9C
HTML hex reference	⃜
Wrong windows-1252 Mojibake	â—Œâƒœ
HTML named entity	&DotDot;
alias	fourth derivative
Encoding: GB18030 (hex bytes)	81 36 B7 39
L^AT_EX	\ddddot

Elsewhere

Complete Record

Property	Value
Age (age)	1.1 (1993)
Unicode Name (na)	COMBINING FOUR DOTS ABOVE
Unicode 1 Name (na1)	NON-SPACING FOUR DOTS ABOVE
Block (blk)	Combining Diacritical Marks for Symbols
General Category (gc)	Nonspacing Mark
Script (sc)	Inherited
Bidirectional Category (bc)	Nonspacing Mark
Combining Class (ccc)	Above
Decomposition Type (dt)	none
Decomposition Mapping (dm)	Combining Four Dots Above
Lowercase (Lower)	✘︎
Simple Lowercase Mapping (slc)	Combining Four Dots Above
Lowercase Mapping (lc)	Combining Four Dots Above
Uppercase (Upper)	✘︎
Simple Uppercase Mapping (suc)	Combining Four Dots Above
Uppercase Mapping (uc)	Combining Four Dots Above
Simple Titlecase Mapping (stc)	Combining Four Dots Above
Titlecase Mapping (tc)	Combining Four Dots Above
Case Folding (cf)	Combining Four Dots Above
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)	Combining Four Dots Above
Grapheme Cluster Break (GCB)	Extend
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)	Extend
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)	✘︎
Modifier Combining Mark (MCM)	✘︎
Math (Math)	✔︎
Noncharacter Code Point (NChar)	✘︎
NFC Quick Check (NFC_QC)	Yes
NFD Quick Check (NFD_QC)	Yes
NFKC Casefold (NFKC_CF)	Combining Four Dots Above
NFKC Quick Check (NFKC_QC)	Yes
NFKC_SCF (NFKC_SCF)	Combining Four Dots Above
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)	Extend
Soft Dotted (SD)	✘︎
Sentence Terminal (STerm)	✘︎
Terminal Punctuation (Term)	✘︎
Unified Ideograph (UIdeo)	✘︎
Variation Selector (VS)	✘︎
Word Break (WB)	Extend
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)	Combining Four Dots Above
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)	Transparent
Line Break (lb)	Combining Mark
Numeric Type (nt)	none
Numeric Value (nv)	not a number
Simple Case Folding (scf)	Combining Four Dots Above
Script Extension (scx)
Vertical Orientation (vo)	R