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# U+2279Neither Greater-Than Nor Less-Than

U+2279 was added in Unicode version 1.1 in 1993. It belongs to the block U+2200 to U+22FF Mathematical Operators 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 Greater-Than Or Less-Than, 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 mirrored into Neither Less-Than Nor Greater-Than. The word that U+2279 forms with similar adjacent characters prevents a line break inside it.

In mathematics, an inequality is a relation which makes a non-equal comparison between two numbers or other mathematical expressions. It is used most often to compare two numbers on the number line by their size. There are several different notations used to represent different kinds of inequalities:

• The notation a < b means that a is less than b.
• The notation a > b means that a is greater than b.

In either case, a is not equal to b. These relations are known as strict inequalities, meaning that a is strictly less than or strictly greater than b. Equality is excluded.

In contrast to strict inequalities, there are two types of inequality relations that are not strict:

• The notation ab or ab means that a is less than or equal to b (or, equivalently, at most b, or not greater than b).
• The notation ab or ab means that a is greater than or equal to b (or, equivalently, at least b, or not less than b).

The relation not greater than can also be represented by ab, the symbol for "greater than" bisected by a slash, "not". The same is true for not less than and ab.

The notation ab means that a is not equal to b; this inequation sometimes is considered a form of strict inequality. It does not say that one is greater than the other; it does not even require a and b to be member of an ordered set.

In engineering sciences, less formal use of the notation is to state that one quantity is "much greater" than another, normally by several orders of magnitude.

• The notation ab means that a is much less than b.
• The notation ab means that a is much greater than b.

This implies that the lesser value can be neglected with little effect on the accuracy of an approximation (such as the case of ultrarelativistic limit in physics).

In all of the cases above, any two symbols mirroring each other are symmetrical; a < b and b > a are equivalent, etc.

## Representations

System Representation
8825
UTF-8 E2 89 B9
UTF-16 22 79
UTF-32 00 00 22 79
URL-Quoted %E2%89%B9
HTML hex reference &#x2279;
Wrong windows-1252 Mojibake â‰¹
HTML named entity &NotGreaterLess;
HTML named entity &ntgl;
LATEX \notgreaterless

## Complete Record

Property Value
Age (age) 1.1 (1993)
Unicode Name (na) NEITHER GREATER-THAN NOR LESS-THAN
Unicode 1 Name (na1) NEITHER GREATER THAN NOR LESS THAN
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) canonical
Decomposition Mapping (dm) Greater-Than Or Less-Than Combining Long Solidus Overlay
Lowercase (Lower)
Simple Lowercase Mapping (slc) Neither Greater-Than Nor Less-Than
Lowercase Mapping (lc) Neither Greater-Than Nor Less-Than
Uppercase (Upper)
Simple Uppercase Mapping (suc) Neither Greater-Than Nor Less-Than
Uppercase Mapping (uc) Neither Greater-Than Nor Less-Than
Simple Titlecase Mapping (stc) Neither Greater-Than Nor Less-Than
Titlecase Mapping (tc) Neither Greater-Than Nor Less-Than
Case Folding (cf) Neither Greater-Than Nor Less-Than
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) Neither Greater-Than Nor Less-Than
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) No
NFKC Casefold (NFKC_CF) Neither Greater-Than Nor Less-Than
NFKC Quick Check (NFKC_QC) Yes
NFKC_SCF (NFKC_SCF) Neither Greater-Than Nor Less-Than
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)
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 Mirrored Glyph (bmg) Neither Less-Than Nor Greater-Than
Bidi Paired Bracket (bpb) Neither Greater-Than Nor Less-Than
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) Neither Greater-Than Nor Less-Than
Script Extension (scx)
Vertical Orientation (vo) R