Home U+2190 to U+21FF Arrows
Glyph for U+2194
Source: Noto Emoji

U+2194 LEFT RIGHT ARROW

U+2194 was added to Unicode in version 1.1 (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 character is also known as z notation relation.

The glyph is not a composition. It has a Ambiguous East Asian Width. In bidirectional context it acts as Other Neutral and is not mirrored. In text U+2194 behaves as Ambiguous (Alphabetic or Ideographic) regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The CLDR project labels this character “left-right arrow” for use in screen reading software. It assigns additional tags, e.g. for search in emoji pickers: arrow, left-right arrow.

This character is designated as an emoji. It will be rendered as monochrome character on conforming platforms. To enable colorful emoji display, you can combine it with Glyph for U+FE0F Variation Selector-16: ↔️ See the Emojipedia for more details on this character’s emoji properties.

The Wikipedia has the following information about this codepoint:

In logic and related fields such as mathematics and philosophy, "if and only if" (shortened as "iff") is a biconditional logical connective between statements, where either both statements are true or both are false.

The connective is biconditional (a statement of material equivalence), and can be likened to the standard material conditional ("only if", equal to "if ... then") combined with its reverse ("if"); hence the name. The result is that the truth of either one of the connected statements requires the truth of the other (i.e. either both statements are true, or both are false), though it is controversial whether the connective thus defined is properly rendered by the English "if and only if"—with its pre-existing meaning. For example, P if and only if Q means that P is true whenever Q is true, and the only case in which P is true is if Q is also true, whereas in the case of P if Q, there could be other scenarios where P is true and Q is false.

In writing, phrases commonly used as alternatives to P "if and only if" Q include: Q is necessary and sufficient for P, for P it is necessary and sufficient that Q, P is equivalent (or materially equivalent) to Q (compare with material implication), P precisely if Q, P precisely (or exactly) when Q, P exactly in case Q, and P just in case Q. Some authors regard "iff" as unsuitable in formal writing; others consider it a "borderline case" and tolerate its use.

In logical formulae, logical symbols, such as ↔ {displaystyle leftrightarrow } and ⇔ {displaystyle Leftrightarrow } , are used instead of these phrases; see § Notation below.

Representations

System Representation
8596
UTF-8 E2 86 94
UTF-16 21 94
UTF-32 00 00 21 94
URL-Quoted %E2%86%94
HTML-Escape ↔
Wrong windows-1252 Mojibake ↔
HTML-Escape ↔
HTML-Escape ↔
HTML-Escape ↔
alias z notation relation
Encoding: EUC-KR (hex bytes) A1 EA
LATEX \leftrightarrow
AGL: Latin-5 arrowboth
Adobe Glyph List arrowboth
digraph <>

Related Characters

Elsewhere

Complete Record

Property Value
Age 1.1 (1993)
Unicode Name LEFT RIGHT ARROW
Unicode 1 Name
Block Arrows
General Category Math Symbol
Script Common
Bidirectional Category Other Neutral
Combining Class Not Reordered
Decomposition Type None
Decomposition Mapping Glyph for U+2194 Left Right Arrow
Lowercase
Simple Lowercase Mapping Glyph for U+2194 Left Right Arrow
Lowercase Mapping Glyph for U+2194 Left Right Arrow
Uppercase
Simple Uppercase Mapping Glyph for U+2194 Left Right Arrow
Uppercase Mapping Glyph for U+2194 Left Right Arrow
Simple Titlecase Mapping Glyph for U+2194 Left Right Arrow
Titlecase Mapping Glyph for U+2194 Left Right Arrow
Case Folding Glyph for U+2194 Left Right Arrow
ASCII Hex Digit
Alphabetic
Bidi Control
Bidi Mirrored
Bidi Paired Bracket Glyph for U+2194 Left Right Arrow
Bidi Paired Bracket Type None
Cased
Composition Exclusion
Case Ignorable
Full Composition Exclusion
Changes When Casefolded
Changes When Casemapped
Changes When NFKC Casefolded
Changes When Lowercased
Changes When Titlecased
Changes When Uppercased
Dash
Deprecated
Default Ignorable Code Point
Diacritic
East Asian Width Ambiguous
Emoji Modifier Base
Emoji Component
Emoji Modifier
Emoji
Emoji Presentation
Extender
Extended Pictographic
FC NFKC Closure Glyph for U+2194 Left Right Arrow
Grapheme Cluster Break Any
Grapheme Base
Grapheme Extend
Grapheme Link
Hex Digit
Hangul Syllable Type Not Applicable
Hyphen
ID Continue
Ideographic
ID Start
IDS Binary Operator
IDS Trinary Operator and
Indic Mantra Category
Indic Positional Category NA
Indic Syllabic Category Other
ISO 10646 Comment
Joining Group No_Joining_Group
Join Control
Jamo Short Name
Joining Type Non Joining
Line Break Ambiguous (Alphabetic or Ideographic)
Logical Order Exception
Math
Noncharacter Code Point
NFC Quick Check Yes
NFD Quick Check Yes
NFKC Casefold Glyph for U+2194 Left Right Arrow
NFKC Quick Check Yes
NFKD Quick Check Yes
Numeric Type None
Numeric Value not a number
Other Alphabetic
Other Default Ignorable Code Point
Other Grapheme Extend
Other ID Continue
Other ID Start
Other Lowercase
Other Math
Other Uppercase
Pattern Syntax
Pattern White Space
Prepended Concatenation Mark
Quotation Mark
Radical
Regional Indicator
Sentence Break Other
Simple Case Folding Glyph for U+2194 Left Right Arrow
Script Extension
Soft Dotted
Sentence Terminal
Terminal Punctuation
Unified Ideograph
Vertical Orientation R
Variation Selector
Word Break Other
White Space
XID Continue
XID Start
Expands On NFC
Expands On NFD
Expands On NFKC
Expands On NFKD