Home: go to the homepage U+3000 to U+303F CJK Symbols and Punctuation

U+3007Ideographic Number Zero

U+3007 was added in Unicode version 1.1 in 1993. It belongs to the block U+3000 to U+303F CJK Symbols and Punctuation in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Letter Number and is mainly used in the Han script. The codepoint has the numeric value 0.

The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it is written from left to right. When changing direction it is not mirrored. U+3007 offers a line break opportunity at its position, except in some numeric contexts. The glyph can be confused with one other glyph.

0 (zero) is a number representing an empty quantity. Adding 0 to any number leaves that number unchanged. In mathematical terminology, 0 is the additive identity of the integers, rational numbers, real numbers, and complex numbers, as well as other algebraic structures. Multiplying any number by 0 has the result 0, and consequently, division by zero has no meaning in arithmetic.

As a numerical digit, 0 plays a crucial role in decimal notation: it indicates that the power of ten corresponding to the place containing a 0 does not contribute to the total. For example, "205" in decimal means two hundreds, no tens, and five ones. The same principle applies in place-value notations that uses a base other than ten, such as binary and hexadecimal. The modern use of 0 in this manner derives from Indian mathematics that was transmitted to Europe via medieval Islamic mathematicians and popularized by Fibonacci. It was independently used by the Maya.

Common names for the number 0 in English include zero, nought, naught (), and nil. In contexts where at least one adjacent digit distinguishes it from the letter O, the number is sometimes pronounced as oh or o (). Informal or slang terms for 0 include zilch and zip. Historically, ought, aught (), and cipher have also been used.

Representations

System Representation
12295
UTF-8 E3 80 87
UTF-16 30 07
UTF-32 00 00 30 07
URL-Quoted %E3%80%87
HTML hex reference &#x3007;
Wrong windows-1252 Mojibake ã€‡
Encoding: JIS0208 (hex bytes) A1 BB
digraph 0_

Complete Record

Property Value
Age (age) 1.1 (1993)
Unicode Name (na) IDEOGRAPHIC NUMBER ZERO
Unicode 1 Name (na1)
Block (blk) CJK Symbols and Punctuation
General Category (gc) Letter Number
Script (sc) Han
Bidirectional Category (bc) Left To Right
Combining Class (ccc) Not Reordered
Decomposition Type (dt) none
Decomposition Mapping (dm) Ideographic Number Zero
Lowercase (Lower)
Simple Lowercase Mapping (slc) Ideographic Number Zero
Lowercase Mapping (lc) Ideographic Number Zero
Uppercase (Upper)
Simple Uppercase Mapping (suc) Ideographic Number Zero
Uppercase Mapping (uc) Ideographic Number Zero
Simple Titlecase Mapping (stc) Ideographic Number Zero
Titlecase Mapping (tc) Ideographic Number Zero
Case Folding (cf) Ideographic Number Zero
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) Ideographic Number Zero
Grapheme Cluster Break (GCB) Any
Grapheme Base (Gr_Base)
Grapheme Extend (Gr_Ext)
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) Ideographic Number Zero
NFKC Quick Check (NFKC_QC) Yes
NFKC_SCF (NFKC_SCF) Ideographic Number Zero
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)
Sentence Break (SB) Other Letter
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) Ideographic Number Zero
Bidi Paired Bracket Type (bpt) None
East Asian Width (ea) wide
Hangul Syllable Type (hst) Not Applicable
ISO 10646 Comment (isc)
Joining Group (jg) No_Joining_Group
Joining Type (jt) Non Joining
Line Break (lb) Ideographic
Numeric Type (nt) numeric
Numeric Value (nv) 0
Simple Case Folding (scf) Ideographic Number Zero
Script Extension (scx)
Vertical Orientation (vo) U